Finding the Fourth Proportional to 124,945.29, 172,446.70 and 73,986.31

Step by Step Solution

1. Step 1: Write the proportion equation
   124,945.29 : 172,446.70 = 73,986.31 : x
2. Step 2: Convert to fraction form
   124,945.29/172,446.70 = 73,986.31/x
3. Step 3: Cross multiply
   124,945.29x = 172,446.70 × 73,986.31
4. Step 4: Simplify right side
   124,945.29x = 12,758,694,388.59
5. Step 5: Solve for x
   x = 12,758,694,388.59/124,945.29
6. Step 6: Final answer
   x = 102,114.25