mortgage balance on inherited house

I sold my inherited house last year for 183000.00 the proceeds are split two ways between me and my sister and my 1099-s says my gross proceeds are $91,500.00,   but on my closing statement after we pay the mortgage balance and closing cost our proceeds are only  $28,500.00 each.  I can find where to claim the closing cost on selling expense but I can't find where to claim the mortgage balance of  $111,000.00.