Finding the Fourth Proportional to 359,790, 496,553.94 and 208,887

Step by Step Solution

1. Step 1: Write the proportion equation
   359,790 : 496,553.94 = 208,887 : x
2. Step 2: Convert to fraction form
   359,790/496,553.94 = 208,887/x
3. Step 3: Cross multiply
   359,790x = 496,553.94 × 208,887
4. Step 4: Simplify right side
   359,790x = 103,723,662,864.78
5. Step 5: Solve for x
   x = 103,723,662,864.78/359,790
6. Step 6: Final answer
   x = 288,289.45