Finding the Fourth Proportional to 124,280.25, 171,383.61 and 76,524.30

Step by Step Solution

1. Step 1: Write the proportion equation
   124,280.25 : 171,383.61 = 76,524.30 : x
2. Step 2: Convert to fraction form
   124,280.25/171,383.61 = 76,524.30/x
3. Step 3: Cross multiply
   124,280.25x = 171,383.61 × 76,524.30
4. Step 4: Simplify right side
   124,280.25x = 13,115,010,786.72
5. Step 5: Solve for x
   x = 13,115,010,786.72/124,280.25
6. Step 6: Final answer
   x = 105,527.71