Finding the Fourth Proportional to 96.50, 144.76 and 42.42

Step by Step Solution

1. Step 1: Write the proportion equation
   96.50 : 144.76 = 42.42 : x
2. Step 2: Convert to fraction form
   96.50/144.76 = 42.42/x
3. Step 3: Cross multiply
   96.50x = 144.76 × 42.42
4. Step 4: Simplify right side
   96.50x = 6,140.72
5. Step 5: Solve for x
   x = 6,140.72/96.50
6. Step 6: Final answer
   x = 63.63