Finding the Fourth Proportional to 562,665.42, 843,589.89 and 262,978.38

Step by Step Solution

1. Step 1: Write the proportion equation
   562,665.42 : 843,589.89 = 262,978.38 : x
2. Step 2: Convert to fraction form
   562,665.42/843,589.89 = 262,978.38/x
3. Step 3: Cross multiply
   562,665.42x = 843,589.89 × 262,978.38
4. Step 4: Simplify right side
   562,665.42x = 221,845,902,656.58
5. Step 5: Solve for x
   x = 221,845,902,656.58/562,665.42
6. Step 6: Final answer
   x = 394,276.77