Finding the Fourth Proportional to 172,959.83, 259,327.94 and 67,789.43

Step by Step Solution

1. Step 1: Write the proportion equation
   172,959.83 : 259,327.94 = 67,789.43 : x
2. Step 2: Convert to fraction form
   172,959.83/259,327.94 = 67,789.43/x
3. Step 3: Cross multiply
   172,959.83x = 259,327.94 × 67,789.43
4. Step 4: Simplify right side
   172,959.83x = 17,579,691,600.09
5. Step 5: Solve for x
   x = 17,579,691,600.09/172,959.83
6. Step 6: Final answer
   x = 101,640.32