Finding the Fourth Proportional to 443,123.20, 664,555.20 and 158,780.80

Step by Step Solution

1. Step 1: Write the proportion equation
   443,123.20 : 664,555.20 = 158,780.80 : x
2. Step 2: Convert to fraction form
   443,123.20/664,555.20 = 158,780.80/x
3. Step 3: Cross multiply
   443,123.20x = 664,555.20 × 158,780.80
4. Step 4: Simplify right side
   443,123.20x = 105,518,606,300.16
5. Step 5: Solve for x
   x = 105,518,606,300.16/443,123.20
6. Step 6: Final answer
   x = 238,124.76