Finding the Fourth Proportional to 539,404.10, 809,300.55 and 224,087.30

Step by Step Solution

1. Step 1: Write the proportion equation
   539,404.10 : 809,300.55 = 224,087.30 : x
2. Step 2: Convert to fraction form
   539,404.10/809,300.55 = 224,087.30/x
3. Step 3: Cross multiply
   539,404.10x = 809,300.55 × 224,087.30
4. Step 4: Simplify right side
   539,404.10x = 181,353,975,138.02
5. Step 5: Solve for x
   x = 181,353,975,138.02/539,404.10
6. Step 6: Final answer
   x = 336,211.71