Finding the Fourth Proportional to 150,105.60, 225,020.16 and 71,256.96

Step by Step Solution

1. Step 1: Write the proportion equation
   150,105.60 : 225,020.16 = 71,256.96 : x
2. Step 2: Convert to fraction form
   150,105.60/225,020.16 = 71,256.96/x
3. Step 3: Cross multiply
   150,105.60x = 225,020.16 × 71,256.96
4. Step 4: Simplify right side
   150,105.60x = 16,034,252,540.31
5. Step 5: Solve for x
   x = 16,034,252,540.31/150,105.60
6. Step 6: Final answer
   x = 106,819.82