Finding the Fourth Proportional to 94.72, 142.20 and 40.72

Step by Step Solution

1. Step 1: Write the proportion equation
   94.72 : 142.20 = 40.72 : x
2. Step 2: Convert to fraction form
   94.72/142.20 = 40.72/x
3. Step 3: Cross multiply
   94.72x = 142.20 × 40.72
4. Step 4: Simplify right side
   94.72x = 5,790.38
5. Step 5: Solve for x
   x = 5,790.38/94.72
6. Step 6: Final answer
   x = 61.13