Finding the Fourth Proportional to 92,819.16, 139,102.92 and 42,789.24

Step by Step Solution

1. Step 1: Write the proportion equation
   92,819.16 : 139,102.92 = 42,789.24 : x
2. Step 2: Convert to fraction form
   92,819.16/139,102.92 = 42,789.24/x
3. Step 3: Cross multiply
   92,819.16x = 139,102.92 × 42,789.24
4. Step 4: Simplify right side
   92,819.16x = 5,952,108,228.58
5. Step 5: Solve for x
   x = 5,952,108,228.58/92,819.16
6. Step 6: Final answer
   x = 64,125.86