The GNSS observed height of two stations is 124.685 m and 89.969 m, and their orthometric heights are 153.104 m and 118.386 m, respectively. These stations have model-derived geoid undulations of 28.454 m and 28.457 m, respectively. What is the orthometric height of a station with a GNSS measured height of 105.968 m and a model-derived geoid undulation of 28.453 m?