Finding the Fourth Proportional to 359,801.50, 496,569.81 and 208,898.50

Step by Step Solution

1. Step 1: Write the proportion equation
   359,801.50 : 496,569.81 = 208,898.50 : x
2. Step 2: Convert to fraction form
   359,801.50/496,569.81 = 208,898.50/x
3. Step 3: Cross multiply
   359,801.50x = 496,569.81 × 208,898.50
4. Step 4: Simplify right side
   359,801.50x = 103,732,688,454.29
5. Step 5: Solve for x
   x = 103,732,688,454.29/359,801.50
6. Step 6: Final answer
   x = 288,305.33