Utah Code Ann. § 53-2a-803
(1) If the governor is unavailable, and if the lieutenant governor, president of the Senate, and the speaker of the House of Representatives are unavailable to exercise the powers and duties of the office of governor, the attorney general, state auditor, or state treasurer shall, in the order named, exercise the powers and duties of the office of governor until:
Renumbered and Amended by Chapter 295, 2013 General Session