A young engineer bought a second hand car worth P319,648 if paid in cash. On the installment basis, he paid a down payment of P67,103; P64,579 at the end of one year; P55,790 at the end of 3 years and a final payment at the end of 7 years. What will be the final payment if money is worth 7.18% per annum? Write your final answer in four decimal places