Finding the Fourth Proportional to 498,311.52, 687,430.72 and 326,153.69

Step by Step Solution

1. Step 1: Write the proportion equation
   498,311.52 : 687,430.72 = 326,153.69 : x
2. Step 2: Convert to fraction form
   498,311.52/687,430.72 = 326,153.69/x
3. Step 3: Cross multiply
   498,311.52x = 687,430.72 × 326,153.69
4. Step 4: Simplify right side
   498,311.52x = 224,208,066,413.07
5. Step 5: Solve for x
   x = 224,208,066,413.07/498,311.52
6. Step 6: Final answer
   x = 449,935.55