Mich. Comp. Laws § 720.215

Sec. 15. Whenever a vacancy shall occur in the office of county public administrator because of the death or incapacity of such county public administrator, the state public administrator, or any county public administrator specifically designated by him, shall petition the probate court, pursuant to the provisions of this act, for appointment as special and/or successor general administrator in each estate in which such deceased or incapacitated county public administrator was appointed fiduciary by virtue of the provisions of this act.