Finding the Fourth Proportional to 498,978.03, 688,589.98 and 269,535.34

Step by Step Solution

1. Step 1: Write the proportion equation
   498,978.03 : 688,589.98 = 269,535.34 : x
2. Step 2: Convert to fraction form
   498,978.03/688,589.98 = 269,535.34/x
3. Step 3: Cross multiply
   498,978.03x = 688,589.98 × 269,535.34
4. Step 4: Simplify right side
   498,978.03x = 185,599,331,984.58
5. Step 5: Solve for x
   x = 185,599,331,984.58/498,978.03
6. Step 6: Final answer
   x = 371,958.93