Finding the Fourth Proportional to 172,621.55, 259,042.92 and 83,826.62

Step by Step Solution

1. Step 1: Write the proportion equation
   172,621.55 : 259,042.92 = 83,826.62 : x
2. Step 2: Convert to fraction form
   172,621.55/259,042.92 = 83,826.62/x
3. Step 3: Cross multiply
   172,621.55x = 259,042.92 × 83,826.62
4. Step 4: Simplify right side
   172,621.55x = 21,714,691,123.32
5. Step 5: Solve for x
   x = 21,714,691,123.32/172,621.55
6. Step 6: Final answer
   x = 125,793.63