Finding the Fourth Proportional to 94.72, 141.72 and 54.16

Step by Step Solution

1. Step 1: Write the proportion equation
   94.72 : 141.72 = 54.16 : x
2. Step 2: Convert to fraction form
   94.72/141.72 = 54.16/x
3. Step 3: Cross multiply
   94.72x = 141.72 × 54.16
4. Step 4: Simplify right side
   94.72x = 7,675.56
5. Step 5: Solve for x
   x = 7,675.56/94.72
6. Step 6: Final answer
   x = 81.03