Finding the Fourth Proportional to 115,146.22, 172,906.89 and 71,053.24

Step by Step Solution

1. Step 1: Write the proportion equation
   115,146.22 : 172,906.89 = 71,053.24 : x
2. Step 2: Convert to fraction form
   115,146.22/172,906.89 = 71,053.24/x
3. Step 3: Cross multiply
   115,146.22x = 172,906.89 × 71,053.24
4. Step 4: Simplify right side
   115,146.22x = 12,285,594,752.82
5. Step 5: Solve for x
   x = 12,285,594,752.82/115,146.22
6. Step 6: Final answer
   x = 106,695.60