Finding the Fourth Proportional to 359,809.88, 496,581.37 and 208,906.88

Step by Step Solution

1. Step 1: Write the proportion equation
   359,809.88 : 496,581.37 = 208,906.88 : x
2. Step 2: Convert to fraction form
   359,809.88/496,581.37 = 208,906.88/x
3. Step 3: Cross multiply
   359,809.88x = 496,581.37 × 208,906.88
4. Step 4: Simplify right side
   359,809.88x = 103,739,261,667.65
5. Step 5: Solve for x
   x = 103,739,261,667.65/359,809.88
6. Step 6: Final answer
   x = 288,316.88