Finding the Fourth Proportional to 101,048.61, 139,413.24 and 65,262.81

Step by Step Solution

1. Step 1: Write the proportion equation
   101,048.61 : 139,413.24 = 65,262.81 : x
2. Step 2: Convert to fraction form
   101,048.61/139,413.24 = 65,262.81/x
3. Step 3: Cross multiply
   101,048.61x = 139,413.24 × 65,262.81
4. Step 4: Simplify right side
   101,048.61x = 9,098,499,793.60
5. Step 5: Solve for x
   x = 9,098,499,793.60/101,048.61
6. Step 6: Final answer
   x = 90,040.82