Finding the Fourth Proportional to 42,679,413.27, 64,019,287.98 and 10,331,263.85

Step by Step Solution

1. Step 1: Write the proportion equation
   42,679,413.27 : 64,019,287.98 = 10,331,263.85 : x
2. Step 2: Convert to fraction form
   42,679,413.27/64,019,287.98 = 10,331,263.85/x
3. Step 3: Cross multiply
   42,679,413.27x = 64,019,287.98 × 10,331,263.85
4. Step 4: Simplify right side
   42,679,413.27x = 661,400,155,290,417.12
5. Step 5: Solve for x
   x = 661,400,155,290,417.12/42,679,413.27
6. Step 6: Final answer
   x = 15,496,936.45