Finding the Fourth Proportional to 127,724.82, 176,265.72 and 71,136.20

Step by Step Solution

1. Step 1: Write the proportion equation
   127,724.82 : 176,265.72 = 71,136.20 : x
2. Step 2: Convert to fraction form
   127,724.82/176,265.72 = 71,136.20/x
3. Step 3: Cross multiply
   127,724.82x = 176,265.72 × 71,136.20
4. Step 4: Simplify right side
   127,724.82x = 12,538,872,629.74
5. Step 5: Solve for x
   x = 12,538,872,629.74/127,724.82
6. Step 6: Final answer
   x = 98,170.99