Finding the Fourth Proportional to 498,280.50, 687,626.90 and 271,926

Step by Step Solution

1. Step 1: Write the proportion equation
   498,280.50 : 687,626.90 = 271,926 : x
2. Step 2: Convert to fraction form
   498,280.50/687,626.90 = 271,926/x
3. Step 3: Cross multiply
   498,280.50x = 687,626.90 × 271,926
4. Step 4: Simplify right side
   498,280.50x = 186,983,632,409.40
5. Step 5: Solve for x
   x = 186,983,632,409.40/498,280.50
6. Step 6: Final answer
   x = 375,257.78