Finding the Fourth Proportional to 91.24, 136.89 and 37.15

Step by Step Solution

1. Step 1: Write the proportion equation
   91.24 : 136.89 = 37.15 : x
2. Step 2: Convert to fraction form
   91.24/136.89 = 37.15/x
3. Step 3: Cross multiply
   91.24x = 136.89 × 37.15
4. Step 4: Simplify right side
   91.24x = 5,085.46
5. Step 5: Solve for x
   x = 5,085.46/91.24
6. Step 6: Final answer
   x = 55.74