Finding the Fourth Proportional to 498,162, 687,463.16 and 271,807.50

Step by Step Solution

1. Step 1: Write the proportion equation
   498,162 : 687,463.16 = 271,807.50 : x
2. Step 2: Convert to fraction form
   498,162/687,463.16 = 271,807.50/x
3. Step 3: Cross multiply
   498,162x = 687,463.16 × 271,807.50
4. Step 4: Simplify right side
   498,162x = 186,857,642,861.70
5. Step 5: Solve for x
   x = 186,857,642,861.70/498,162
6. Step 6: Final answer
   x = 375,094.13