Finding the Fourth Proportional to 112,920.18, 155,827.89 and 62,619.54

Step by Step Solution

1. Step 1: Write the proportion equation
   112,920.18 : 155,827.89 = 62,619.54 : x
2. Step 2: Convert to fraction form
   112,920.18/155,827.89 = 62,619.54/x
3. Step 3: Cross multiply
   112,920.18x = 155,827.89 × 62,619.54
4. Step 4: Simplify right side
   112,920.18x = 9,757,870,790.97
5. Step 5: Solve for x
   x = 9,757,870,790.97/112,920.18
6. Step 6: Final answer
   x = 86,413.88