Seriously, Walford? This thread is not related to you or your unending need to assert your self-worth, just because someone said your name. For a veteran member of the community, even such an IC hated one as yourself, you should know better.
Back on topic: Dear OP: there is no incentive for anyone to lend you that money, even with the interest. Your plan is to give me $30M interest on a $72M investment that is over a time span of 160 days, at least (factoring in the 20 extra days to pay the interest). For some reason you're not putting Foreign Ministries into your calculations, so we'll pretend only 4 aid slots can be used.
$30M/160 days = $187,500 per day.
For me, at least, that's essentially the difference between carrying a full complement of tanks and the absolute minimum (zero). So rather than do all that administrative work, expect every single middle man to do their part without stealing the money or accepting any form of compensation throughout the entire process, and run up an obscene amount of risk for little return on my investment, I'd much rather apply the $72M to my nation, which will bring me the same financial benefits as well as improve my nation.
More or less, if you would want to offer something to me that would pique my interest, you'd basically have to be my slave for life. Giving me tech almost indefinitely.
As others have said, your best bet is to join an alliance. Not only will they provide opportunities for you to join in the tech trade to earn your money using tried-and-true systems, but they will also give you the advice, knowledge, and experience to best utilize that money.
Also, PROTIP: Don't set your AA to IRON Applicant and declare war on someone. That's an excellent way to get IRON very mad at you. In fact, stop declaring wars immediately. Peace out of those you can, and when all of them are done and you are at peace, (which, considering that a Nueva Vida nation is attacking with the reason "for nueva vida!", you're probably on their ZI-list, and probably never going to not be attacked ever again... see what I mean about this being in an alliance = having access to information and experienced fellow members?) join up with someone. Almost all alliances have open applications, some make you go through a training and examination phase to enter, but just about everyone will give you a chance to become a member if you prove your worth to them.