Welcome, @Stephanie_Borcea,
Until the excellent @Michael_A replies, I’ll chime in briefly…
You can do some simple summing of amounts in Asana project in list view that looks like this, which is an image from a Forum Leaders tips of mine. It’s topic is Invoices/Payments, but if you think about it, it perfectly aligns with the accounting you mention in Grants Amounts/Payment Requests:
You could go a different route and use Portfolios > Export > [Sync to] Google Sheets but I think that’s more effort and would only be worthwhile if you had more related requirements besides what you mentioned here.
Hope that helps,
Larry