Finding the Fourth Proportional to 96.54, 144.72 and 72.42

Step by Step Solution

1. Step 1: Write the proportion equation
   96.54 : 144.72 = 72.42 : x
2. Step 2: Convert to fraction form
   96.54/144.72 = 72.42/x
3. Step 3: Cross multiply
   96.54x = 144.72 × 72.42
4. Step 4: Simplify right side
   96.54x = 10,480.62
5. Step 5: Solve for x
   x = 10,480.62/96.54
6. Step 6: Final answer
   x = 108.56