Finding the Fourth Proportional to 91.29, 136.81 and 37.15

Step by Step Solution

1. Step 1: Write the proportion equation
   91.29 : 136.81 = 37.15 : x
2. Step 2: Convert to fraction form
   91.29/136.81 = 37.15/x
3. Step 3: Cross multiply
   91.29x = 136.81 × 37.15
4. Step 4: Simplify right side
   91.29x = 5,082.49
5. Step 5: Solve for x
   x = 5,082.49/91.29
6. Step 6: Final answer
   x = 55.67