Finding the Fourth Proportional to 449,288.02, 620,018.52 and 245,339.33

Step by Step Solution

1. Step 1: Write the proportion equation
   449,288.02 : 620,018.52 = 245,339.33 : x
2. Step 2: Convert to fraction form
   449,288.02/620,018.52 = 245,339.33/x
3. Step 3: Cross multiply
   449,288.02x = 620,018.52 × 245,339.33
4. Step 4: Simplify right side
   449,288.02x = 152,114,929,821.93
5. Step 5: Solve for x
   x = 152,114,929,821.93/449,288.02
6. Step 6: Final answer
   x = 338,568.86