Finding the Fourth Proportional to 96.42, 132.72 and 82.56

Step by Step Solution

1. Step 1: Write the proportion equation
   96.42 : 132.72 = 82.56 : x
2. Step 2: Convert to fraction form
   96.42/132.72 = 82.56/x
3. Step 3: Cross multiply
   96.42x = 132.72 × 82.56
4. Step 4: Simplify right side
   96.42x = 10,957.36
5. Step 5: Solve for x
   x = 10,957.36/96.42
6. Step 6: Final answer
   x = 113.64