Finding the Fourth Proportional to 258,521, 388,144.82 and 132,251.82

Step by Step Solution

1. Step 1: Write the proportion equation
   258,521 : 388,144.82 = 132,251.82 : x
2. Step 2: Convert to fraction form
   258,521/388,144.82 = 132,251.82/x
3. Step 3: Cross multiply
   258,521x = 388,144.82 × 132,251.82
4. Step 4: Simplify right side
   258,521x = 51,332,858,868.57
5. Step 5: Solve for x
   x = 51,332,858,868.57/258,521
6. Step 6: Final answer
   x = 198,563.59