A company's postretirement health care benefit plan had an APBO of $245,000 on January 1, 2018. During 2018, retiree benefits paid were $38,000. The discount rate for the plan for this year was 10%. Service cost for 2018 was $78,000. Plan assets (fair value) increased during the year by $309,500.
Required:
a) The amount of the APBO at December 31, 2018, was ___________.