Three invoices for the amounts of $35,500, $25,000, and $40,100 were received on August 6, 2014, September 5, 2014, and September 28, 2014, respectively. If the payment terms are 3/7, 2/30, n/60, calculate the amount that must be paid on October 5, 2014 to settle all three invoices. Round to the nearest cent