Finding the Fourth Proportional to 96.42, 144.72 and 88.50

Step by Step Solution

1. Step 1: Write the proportion equation
   96.42 : 144.72 = 88.50 : x
2. Step 2: Convert to fraction form
   96.42/144.72 = 88.50/x
3. Step 3: Cross multiply
   96.42x = 144.72 × 88.50
4. Step 4: Simplify right side
   96.42x = 12,807.72
5. Step 5: Solve for x
   x = 12,807.72/96.42
6. Step 6: Final answer
   x = 132.83