Finding the Fourth Proportional to 589,423.50, 813,404.43 and 321,151.50

Step by Step Solution

1. Step 1: Write the proportion equation
   589,423.50 : 813,404.43 = 321,151.50 : x
2. Step 2: Convert to fraction form
   589,423.50/813,404.43 = 321,151.50/x
3. Step 3: Cross multiply
   589,423.50x = 813,404.43 × 321,151.50
4. Step 4: Simplify right side
   589,423.50x = 261,226,052,801.15
5. Step 5: Solve for x
   x = 261,226,052,801.15/589,423.50
6. Step 6: Final answer
   x = 443,189.07