Finding the Fourth Proportional to 322,139.78, 444,540.72 and 178,909.05

Step by Step Solution

1. Step 1: Write the proportion equation
   322,139.78 : 444,540.72 = 178,909.05 : x
2. Step 2: Convert to fraction form
   322,139.78/444,540.72 = 178,909.05/x
3. Step 3: Cross multiply
   322,139.78x = 444,540.72 × 178,909.05
4. Step 4: Simplify right side
   322,139.78x = 79,532,357,901.52
5. Step 5: Solve for x
   x = 79,532,357,901.52/322,139.78
6. Step 6: Final answer
   x = 246,887.73