Finding the Fourth Proportional to 296,778.52, 444,870.78 and 147,128.32

Step by Step Solution

1. Step 1: Write the proportion equation
   296,778.52 : 444,870.78 = 147,128.32 : x
2. Step 2: Convert to fraction form
   296,778.52/444,870.78 = 147,128.32/x
3. Step 3: Cross multiply
   296,778.52x = 444,870.78 × 147,128.32
4. Step 4: Simplify right side
   296,778.52x = 65,453,090,478.49
5. Step 5: Solve for x
   x = 65,453,090,478.49/296,778.52
6. Step 6: Final answer
   x = 220,545.24