Finding the Fourth Proportional to 111.26, 153.28 and 91.82

Step by Step Solution

1. Step 1: Write the proportion equation
   111.26 : 153.28 = 91.82 : x
2. Step 2: Convert to fraction form
   111.26/153.28 = 91.82/x
3. Step 3: Cross multiply
   111.26x = 153.28 × 91.82
4. Step 4: Simplify right side
   111.26x = 14,074.17
5. Step 5: Solve for x
   x = 14,074.17/111.26
6. Step 6: Final answer
   x = 126.50