During the month of March, Harley's Computer Services made purchases on account totaling $47,100. Also during the month of March, Harley was paid $13,400 by a customer for services to be provided in the future and paid $38,700 of cash on its accounts payable balance. If the balance in the accounts payable account at the beginning of March was $79,100, what is the balance in accounts payable at the end of March?