Finding the Fourth Proportional to 510,167.92, 704,036.73 and 280,730.15

Step by Step Solution

1. Step 1: Write the proportion equation
   510,167.92 : 704,036.73 = 280,730.15 : x
2. Step 2: Convert to fraction form
   510,167.92/704,036.73 = 280,730.15/x
3. Step 3: Cross multiply
   510,167.92x = 704,036.73 × 280,730.15
4. Step 4: Simplify right side
   510,167.92x = 197,644,333,431.89
5. Step 5: Solve for x
   x = 197,644,333,431.89/510,167.92
6. Step 6: Final answer
   x = 387,410.35