Finding the Fourth Proportional to 124,529.49, 171,876.27 and 76,139.69

Step by Step Solution

1. Step 1: Write the proportion equation
   124,529.49 : 171,876.27 = 76,139.69 : x
2. Step 2: Convert to fraction form
   124,529.49/171,876.27 = 76,139.69/x
3. Step 3: Cross multiply
   124,529.49x = 171,876.27 × 76,139.69
4. Step 4: Simplify right side
   124,529.49x = 13,086,605,056.77
5. Step 5: Solve for x
   x = 13,086,605,056.77/124,529.49
6. Step 6: Final answer
   x = 105,088.40