Finding the Fourth Proportional to 124,871.50, 172,323.39 and 80,159.50

Step by Step Solution

1. Step 1: Write the proportion equation
   124,871.50 : 172,323.39 = 80,159.50 : x
2. Step 2: Convert to fraction form
   124,871.50/172,323.39 = 80,159.50/x
3. Step 3: Cross multiply
   124,871.50x = 172,323.39 × 80,159.50
4. Step 4: Simplify right side
   124,871.50x = 13,813,356,780.71
5. Step 5: Solve for x
   x = 13,813,356,780.71/124,871.50
6. Step 6: Final answer
   x = 110,620.57