Finding the Fourth Proportional to 498.55, 747.77 and 133.37

Step by Step Solution

1. Step 1: Write the proportion equation
   498.55 : 747.77 = 133.37 : x
2. Step 2: Convert to fraction form
   498.55/747.77 = 133.37/x
3. Step 3: Cross multiply
   498.55x = 747.77 × 133.37
4. Step 4: Simplify right side
   498.55x = 99,729.42
5. Step 5: Solve for x
   x = 99,729.42/498.55
6. Step 6: Final answer
   x = 200.04