Finding the Fourth Proportional to 510,217.47, 765,498.42 and 225,868.79

Step by Step Solution

1. Step 1: Write the proportion equation
   510,217.47 : 765,498.42 = 225,868.79 : x
2. Step 2: Convert to fraction form
   510,217.47/765,498.42 = 225,868.79/x
3. Step 3: Cross multiply
   510,217.47x = 765,498.42 × 225,868.79
4. Step 4: Simplify right side
   510,217.47x = 172,902,198,044.82
5. Step 5: Solve for x
   x = 172,902,198,044.82/510,217.47
6. Step 6: Final answer
   x = 338,879.42