Finding the Fourth Proportional to 123,010.92, 169,782.69 and 80,544.78

Step by Step Solution

1. Step 1: Write the proportion equation
   123,010.92 : 169,782.69 = 80,544.78 : x
2. Step 2: Convert to fraction form
   123,010.92/169,782.69 = 80,544.78/x
3. Step 3: Cross multiply
   123,010.92x = 169,782.69 × 80,544.78
4. Step 4: Simplify right side
   123,010.92x = 13,675,109,413.86
5. Step 5: Solve for x
   x = 13,675,109,413.86/123,010.92
6. Step 6: Final answer
   x = 111,169.88