Finding the Fourth Proportional to 127,809.98, 176,390.89 and 76,839.31

Step by Step Solution

1. Step 1: Write the proportion equation
   127,809.98 : 176,390.89 = 76,839.31 : x
2. Step 2: Convert to fraction form
   127,809.98/176,390.89 = 76,839.31/x
3. Step 3: Cross multiply
   127,809.98x = 176,390.89 × 76,839.31
4. Step 4: Simplify right side
   127,809.98x = 13,553,753,644.81
5. Step 5: Solve for x
   x = 13,553,753,644.81/127,809.98
6. Step 6: Final answer
   x = 106,046.13