Finding the Fourth Proportional to 359,499.87, 496,289.61 and 223,577.61

Step by Step Solution

1. Step 1: Write the proportion equation
   359,499.87 : 496,289.61 = 223,577.61 : x
2. Step 2: Convert to fraction form
   359,499.87/496,289.61 = 223,577.61/x
3. Step 3: Cross multiply
   359,499.87x = 496,289.61 × 223,577.61
4. Step 4: Simplify right side
   359,499.87x = 110,959,244,871.63
5. Step 5: Solve for x
   x = 110,959,244,871.63/359,499.87
6. Step 6: Final answer
   x = 308,648.92