Finding the Fourth Proportional to 375,439, 518,105.82 and 224,536

Step by Step Solution

1. Step 1: Write the proportion equation
   375,439 : 518,105.82 = 224,536 : x
2. Step 2: Convert to fraction form
   375,439/518,105.82 = 224,536/x
3. Step 3: Cross multiply
   375,439x = 518,105.82 × 224,536
4. Step 4: Simplify right side
   375,439x = 116,333,408,399.52
5. Step 5: Solve for x
   x = 116,333,408,399.52/375,439
6. Step 6: Final answer
   x = 309,859.68