Finding the Fourth Proportional to 359,661.86, 496,259.27 and 206,670.50

Step by Step Solution

1. Step 1: Write the proportion equation
   359,661.86 : 496,259.27 = 206,670.50 : x
2. Step 2: Convert to fraction form
   359,661.86/496,259.27 = 206,670.50/x
3. Step 3: Cross multiply
   359,661.86x = 496,259.27 × 206,670.50
4. Step 4: Simplify right side
   359,661.86x = 102,562,149,495.92
5. Step 5: Solve for x
   x = 102,562,149,495.92/359,661.86
6. Step 6: Final answer
   x = 285,162.70