Mich. Comp. Laws § 700.3718: Powers of surviving personal representative.

Sec. 3718.

Unless the will provides otherwise, each power exercisable by personal corepresentatives may be exercised by the 1 or more remaining personal corepresentatives after the appointment of 1 or more is terminated. Unless the will provides otherwise, if 1 of 2 or more persons nominated as personal corepresentatives is not appointed, those or the 1 appointed may exercise all the powers incident to the office.