Finding the Fourth Proportional to 562,339.98, 776,028.33 and 307,691.10

Step by Step Solution

1. Step 1: Write the proportion equation
   562,339.98 : 776,028.33 = 307,691.10 : x
2. Step 2: Convert to fraction form
   562,339.98/776,028.33 = 307,691.10/x
3. Step 3: Cross multiply
   562,339.98x = 776,028.33 × 307,691.10
4. Step 4: Simplify right side
   562,339.98x = 238,777,010,488.86
5. Step 5: Solve for x
   x = 238,777,010,488.86/562,339.98
6. Step 6: Final answer
   x = 424,613.26