Finding the Fourth Proportional to 506,413.50, 698,129.33 and 345,061.50

Step by Step Solution

1. Step 1: Write the proportion equation
   506,413.50 : 698,129.33 = 345,061.50 : x
2. Step 2: Convert to fraction form
   506,413.50/698,129.33 = 345,061.50/x
3. Step 3: Cross multiply
   506,413.50x = 698,129.33 × 345,061.50
4. Step 4: Simplify right side
   506,413.50x = 240,897,552,078.49
5. Step 5: Solve for x
   x = 240,897,552,078.49/506,413.50
6. Step 6: Final answer
   x = 475,693.39