Given the following information regarding a mortgage pass-through security (MPTS), determine the pool balance at the beginning the second year: Market interest rate: 11%; Beginning pool balance: $100,000,000; Maturity: 15 years; Coupon (pass-through) rate: 10.5%; All mortgages in the pool are 11%, 10-year loans, with annual payments; Payments are passed through to the investors at the end of each year; Servicing fee: 0.5% of the pool balance at the end of the preceding year; Prepayment rate: 10% of the pool balance at the end of the preceding year.