Finding the Fourth Proportional to 124,870.50, 172,322.01 and 80,158.50

Step by Step Solution

1. Step 1: Write the proportion equation
   124,870.50 : 172,322.01 = 80,158.50 : x
2. Step 2: Convert to fraction form
   124,870.50/172,322.01 = 80,158.50/x
3. Step 3: Cross multiply
   124,870.50x = 172,322.01 × 80,158.50
4. Step 4: Simplify right side
   124,870.50x = 13,813,073,838.59
5. Step 5: Solve for x
   x = 13,813,073,838.59/124,870.50
6. Step 6: Final answer
   x = 110,619.19