Finding the Fourth Proportional to 124,921.88, 172,419.06 and 79,589.04

Step by Step Solution

1. Step 1: Write the proportion equation
   124,921.88 : 172,419.06 = 79,589.04 : x
2. Step 2: Convert to fraction form
   124,921.88/172,419.06 = 79,589.04/x
3. Step 3: Cross multiply
   124,921.88x = 172,419.06 × 79,589.04
4. Step 4: Simplify right side
   124,921.88x = 13,722,667,463.10
5. Step 5: Solve for x
   x = 13,722,667,463.10/124,921.88
6. Step 6: Final answer
   x = 109,849.99