Finding the Fourth Proportional to 498.99, 748.38 and 133.69

Step by Step Solution

1. Step 1: Write the proportion equation
   498.99 : 748.38 = 133.69 : x
2. Step 2: Convert to fraction form
   498.99/748.38 = 133.69/x
3. Step 3: Cross multiply
   498.99x = 748.38 × 133.69
4. Step 4: Simplify right side
   498.99x = 100,048.96
5. Step 5: Solve for x
   x = 100,048.96/498.99
6. Step 6: Final answer
   x = 200.50