Finding the Fourth Proportional to 323,404.73, 443,066.07 and 311,283.74

Step by Step Solution

1. Step 1: Write the proportion equation
   323,404.73 : 443,066.07 = 311,283.74 : x
2. Step 2: Convert to fraction form
   323,404.73/443,066.07 = 311,283.74/x
3. Step 3: Cross multiply
   323,404.73x = 443,066.07 × 311,283.74
4. Step 4: Simplify right side
   323,404.73x = 137,919,264,444.37
5. Step 5: Solve for x
   x = 137,919,264,444.37/323,404.73
6. Step 6: Final answer
   x = 426,460.26