Finding the Fourth Proportional to 172,067.00, 258,137.39 and 72,169.61

Step by Step Solution

1. Step 1: Write the proportion equation
   172,067.00 : 258,137.39 = 72,169.61 : x
2. Step 2: Convert to fraction form
   172,067.00/258,137.39 = 72,169.61/x
3. Step 3: Cross multiply
   172,067.00x = 258,137.39 × 72,169.61
4. Step 4: Simplify right side
   172,067.00x = 18,629,673,111.18
5. Step 5: Solve for x
   x = 18,629,673,111.18/172,067.00
6. Step 6: Final answer
   x = 108,269.88