Finding the Fourth Proportional to 172,683.94, 259,026.57 and 88,398.10

Step by Step Solution

1. Step 1: Write the proportion equation
   172,683.94 : 259,026.57 = 88,398.10 : x
2. Step 2: Convert to fraction form
   172,683.94/259,026.57 = 88,398.10/x
3. Step 3: Cross multiply
   172,683.94x = 259,026.57 × 88,398.10
4. Step 4: Simplify right side
   172,683.94x = 22,897,456,637.52
5. Step 5: Solve for x
   x = 22,897,456,637.52/172,683.94
6. Step 6: Final answer
   x = 132,597.49