Finding the Fourth Proportional to 510,499.24, 704,488.98 and 284,139.88

Step by Step Solution

1. Step 1: Write the proportion equation
   510,499.24 : 704,488.98 = 284,139.88 : x
2. Step 2: Convert to fraction form
   510,499.24/704,488.98 = 284,139.88/x
3. Step 3: Cross multiply
   510,499.24x = 704,488.98 × 284,139.88
4. Step 4: Simplify right side
   510,499.24x = 200,173,414,238.52
5. Step 5: Solve for x
   x = 200,173,414,238.52/510,499.24
6. Step 6: Final answer
   x = 392,113.05