Finding the Fourth Proportional to 498.47, 747.72 and 133.25

Step by Step Solution

1. Step 1: Write the proportion equation
   498.47 : 747.72 = 133.25 : x
2. Step 2: Convert to fraction form
   498.47/747.72 = 133.25/x
3. Step 3: Cross multiply
   498.47x = 747.72 × 133.25
4. Step 4: Simplify right side
   498.47x = 99,629.95
5. Step 5: Solve for x
   x = 99,629.95/498.47
6. Step 6: Final answer
   x = 199.87