Michigan Compiled Laws, Chapter 450. Corporations § 450.2445

(a) If only 1 fiduciary votes, that act binds all.

(b) If more than 1 fiduciary votes, the vote of the shares or membership shall be cast as the majority of the fiduciaries determines.

(c) If the fiduciaries are equally divided as to how the vote of the shares or membership shall be cast, a court having jurisdiction in an action brought by any of the fiduciaries or by any beneficiary may appoint an additional person to act with the fiduciaries in such matter, and the vote of the stock or membership shall be cast by the majority of such fiduciaries and such additional person.