Finding the Fourth Proportional to 86,139.69, 118,872.78 and 48,413.94

Step by Step Solution

1. Step 1: Write the proportion equation
   86,139.69 : 118,872.78 = 48,413.94 : x
2. Step 2: Convert to fraction form
   86,139.69/118,872.78 = 48,413.94/x
3. Step 3: Cross multiply
   86,139.69x = 118,872.78 × 48,413.94
4. Step 4: Simplify right side
   86,139.69x = 5,755,099,396.48
5. Step 5: Solve for x
   x = 5,755,099,396.48/86,139.69
6. Step 6: Final answer
   x = 66,811.24