problem 6-42 calculating loan payments [lo2] you need a 30-year, fixed-rate mortgage to buy a new home for $250,000. your mortgage bank will lend you the money at an apr of 5.45 percent for this 360-month loan. however, you can afford monthly payments of only $900, so you offer to pay off any remaining loan balance at the end of the loan in the form of a single balloon payment. how large will this balloon payment have to be for you to keep your monthly payments at $900? (do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.)