Finding the Fourth Proportional to 498,401.10, 687,793.55 and 272,046.60

Step by Step Solution

1. Step 1: Write the proportion equation
   498,401.10 : 687,793.55 = 272,046.60 : x
2. Step 2: Convert to fraction form
   498,401.10/687,793.55 = 272,046.60/x
3. Step 3: Cross multiply
   498,401.10x = 687,793.55 × 272,046.60
4. Step 4: Simplify right side
   498,401.10x = 187,111,895,419.20
5. Step 5: Solve for x
   x = 187,111,895,419.20/498,401.10
6. Step 6: Final answer
   x = 375,424.32