Finding the Fourth Proportional to 359,715.79, 496,401.37 and 206,752.15

Step by Step Solution

1. Step 1: Write the proportion equation
   359,715.79 : 496,401.37 = 206,752.15 : x
2. Step 2: Convert to fraction form
   359,715.79/496,401.37 = 206,752.15/x
3. Step 3: Cross multiply
   359,715.79x = 496,401.37 × 206,752.15
4. Step 4: Simplify right side
   359,715.79x = 102,632,050,510.45
5. Step 5: Solve for x
   x = 102,632,050,510.45/359,715.79
6. Step 6: Final answer
   x = 285,314.28