Finding the Fourth Proportional to 320,080.56, 479,863.53 and 219,944.04

Step by Step Solution

1. Step 1: Write the proportion equation
   320,080.56 : 479,863.53 = 219,944.04 : x
2. Step 2: Convert to fraction form
   320,080.56/479,863.53 = 219,944.04/x
3. Step 3: Cross multiply
   320,080.56x = 479,863.53 × 219,944.04
4. Step 4: Simplify right side
   320,080.56x = 105,543,123,436.86
5. Step 5: Solve for x
   x = 105,543,123,436.86/320,080.56
6. Step 6: Final answer
   x = 329,739.25