Let R, H, & A be the amount of money that Ryan, Heather, & Alonza have respectively.
Based on the given information R + H + A = 98
R = H + 10
A = 4R
Making R the lone variable gives
R + (R - 10) + 4R = 98
Then
6R = 108 or R = 18 Then
R = $18
H = R - 10 = $8
A = 4R = $72