During the month of March, Harley's Computer Services made purchases on account totaling $46,700. Also, during the month of March, Harley was paid $12,800 by a customer for services to be provided in the future and paid $38,500 of cash on its accounts payable balance. If the balance in the accounts payable account at the beginning of March was $78,900, what is the balance in accounts payable at the end of March