Finding the Fourth Proportional to 359,800.50, 496,568.43 and 208,897.50

Step by Step Solution

1. Step 1: Write the proportion equation
   359,800.50 : 496,568.43 = 208,897.50 : x
2. Step 2: Convert to fraction form
   359,800.50/496,568.43 = 208,897.50/x
3. Step 3: Cross multiply
   359,800.50x = 496,568.43 × 208,897.50
4. Step 4: Simplify right side
   359,800.50x = 103,731,903,605.93
5. Step 5: Solve for x
   x = 103,731,903,605.93/359,800.50
6. Step 6: Final answer
   x = 288,303.95