Finding the Fourth Proportional to 359,978.24, 496,775.22 and 209,075.24

Step by Step Solution

1. Step 1: Write the proportion equation
   359,978.24 : 496,775.22 = 209,075.24 : x
2. Step 2: Convert to fraction form
   359,978.24/496,775.22 = 209,075.24/x
3. Step 3: Cross multiply
   359,978.24x = 496,775.22 × 209,075.24
4. Step 4: Simplify right side
   359,978.24x = 103,863,398,347.55
5. Step 5: Solve for x
   x = 103,863,398,347.55/359,978.24
6. Step 6: Final answer
   x = 288,526.88