Finding the Fourth Proportional to 96.18, 132.71 and 54.72

Step by Step Solution

1. Step 1: Write the proportion equation
   96.18 : 132.71 = 54.72 : x
2. Step 2: Convert to fraction form
   96.18/132.71 = 54.72/x
3. Step 3: Cross multiply
   96.18x = 132.71 × 54.72
4. Step 4: Simplify right side
   96.18x = 7,261.89
5. Step 5: Solve for x
   x = 7,261.89/96.18
6. Step 6: Final answer
   x = 75.50