Finding the Fourth Proportional to 124,710.88, 171,978.06 and 76,954.09

Step by Step Solution

1. Step 1: Write the proportion equation
   124,710.88 : 171,978.06 = 76,954.09 : x
2. Step 2: Convert to fraction form
   124,710.88/171,978.06 = 76,954.09/x
3. Step 3: Cross multiply
   124,710.88x = 171,978.06 × 76,954.09
4. Step 4: Simplify right side
   124,710.88x = 13,234,415,107.27
5. Step 5: Solve for x
   x = 13,234,415,107.27/124,710.88
6. Step 6: Final answer
   x = 106,120.77