Finding the Fourth Proportional to 498.42, 747.56 and 147.02

Step by Step Solution

1. Step 1: Write the proportion equation
   498.42 : 747.56 = 147.02 : x
2. Step 2: Convert to fraction form
   498.42/747.56 = 147.02/x
3. Step 3: Cross multiply
   498.42x = 747.56 × 147.02
4. Step 4: Simplify right side
   498.42x = 109,902.90
5. Step 5: Solve for x
   x = 109,902.90/498.42
6. Step 6: Final answer
   x = 220.50