Finding the Fourth Proportional to 498,870.03, 688,439.48 and 272,517.15

Step by Step Solution

1. Step 1: Write the proportion equation
   498,870.03 : 688,439.48 = 272,517.15 : x
2. Step 2: Convert to fraction form
   498,870.03/688,439.48 = 272,517.15/x
3. Step 3: Cross multiply
   498,870.03x = 688,439.48 × 272,517.15
4. Step 4: Simplify right side
   498,870.03x = 187,611,563,674.50
5. Step 5: Solve for x
   x = 187,611,563,674.50/498,870.03
6. Step 6: Final answer
   x = 376,073.03