Finding the Fourth Proportional to 127,856.90, 176,443.71 and 70,498.28

Step by Step Solution

1. Step 1: Write the proportion equation
   127,856.90 : 176,443.71 = 70,498.28 : x
2. Step 2: Convert to fraction form
   127,856.90/176,443.71 = 70,498.28/x
3. Step 3: Cross multiply
   127,856.90x = 176,443.71 × 70,498.28
4. Step 4: Simplify right side
   127,856.90x = 12,438,977,630.71
5. Step 5: Solve for x
   x = 12,438,977,630.71/127,856.90
6. Step 6: Final answer
   x = 97,288.28