Finding the Fourth Proportional to 443,341.18, 665,105.29 and 143,798.50

Step by Step Solution

1. Step 1: Write the proportion equation
   443,341.18 : 665,105.29 = 143,798.50 : x
2. Step 2: Convert to fraction form
   443,341.18/665,105.29 = 143,798.50/x
3. Step 3: Cross multiply
   443,341.18x = 665,105.29 × 143,798.50
4. Step 4: Simplify right side
   443,341.18x = 95,641,141,561.05
5. Step 5: Solve for x
   x = 95,641,141,561.05/443,341.18
6. Step 6: Final answer
   x = 215,728.08