Finding the Fourth Proportional to 146,499.20, 218,517.20 and 133,045.05

Step by Step Solution

1. Step 1: Write the proportion equation
   146,499.20 : 218,517.20 = 133,045.05 : x
2. Step 2: Convert to fraction form
   146,499.20/218,517.20 = 133,045.05/x
3. Step 3: Cross multiply
   146,499.20x = 218,517.20 × 133,045.05
4. Step 4: Simplify right side
   146,499.20x = 29,072,632,132.47
5. Step 5: Solve for x
   x = 29,072,632,132.47/146,499.20
6. Step 6: Final answer
   x = 198,449.09