Finding the Fourth Proportional to 88,413.59, 122,012.31 and 48,128.51

Step by Step Solution

1. Step 1: Write the proportion equation
   88,413.59 : 122,012.31 = 48,128.51 : x
2. Step 2: Convert to fraction form
   88,413.59/122,012.31 = 48,128.51/x
3. Step 3: Cross multiply
   88,413.59x = 122,012.31 × 48,128.51
4. Step 4: Simplify right side
   88,413.59x = 5,872,270,681.96
5. Step 5: Solve for x
   x = 5,872,270,681.96/88,413.59
6. Step 6: Final answer
   x = 66,418.19