Finding the Fourth Proportional to 449,131.98, 619,775.82 and 245,142.48

Step by Step Solution

1. Step 1: Write the proportion equation
   449,131.98 : 619,775.82 = 245,142.48 : x
2. Step 2: Convert to fraction form
   449,131.98/619,775.82 = 245,142.48/x
3. Step 3: Cross multiply
   449,131.98x = 619,775.82 × 245,142.48
4. Step 4: Simplify right side
   449,131.98x = 151,933,381,558.83
5. Step 5: Solve for x
   x = 151,933,381,558.83/449,131.98
6. Step 6: Final answer
   x = 338,282.26