Finding the Fourth Proportional to 127,142.28, 175,459.98 and 70,557.30

Step by Step Solution

1. Step 1: Write the proportion equation
   127,142.28 : 175,459.98 = 70,557.30 : x
2. Step 2: Convert to fraction form
   127,142.28/175,459.98 = 70,557.30/x
3. Step 3: Cross multiply
   127,142.28x = 175,459.98 × 70,557.30
4. Step 4: Simplify right side
   127,142.28x = 12,379,982,446.85
5. Step 5: Solve for x
   x = 12,379,982,446.85/127,142.28
6. Step 6: Final answer
   x = 97,371.09