Finding the Fourth Proportional to 127,680.78, 176,188.59 and 71,097.42

Step by Step Solution

1. Step 1: Write the proportion equation
   127,680.78 : 176,188.59 = 71,097.42 : x
2. Step 2: Convert to fraction form
   127,680.78/176,188.59 = 71,097.42/x
3. Step 3: Cross multiply
   127,680.78x = 176,188.59 × 71,097.42
4. Step 4: Simplify right side
   127,680.78x = 12,526,554,182.44
5. Step 5: Solve for x
   x = 12,526,554,182.44/127,680.78
6. Step 6: Final answer
   x = 98,108.38