Finding the Fourth Proportional to 122,166.72, 168,578.55 and 83,959.83

Step by Step Solution

1. Step 1: Write the proportion equation
   122,166.72 : 168,578.55 = 83,959.83 : x
2. Step 2: Convert to fraction form
   122,166.72/168,578.55 = 83,959.83/x
3. Step 3: Cross multiply
   122,166.72x = 168,578.55 × 83,959.83
4. Step 4: Simplify right side
   122,166.72x = 14,153,826,399.65
5. Step 5: Solve for x
   x = 14,153,826,399.65/122,166.72
6. Step 6: Final answer
   x = 115,856.65