Finding the Fourth Proportional to 166,604.72, 229,920.24 and 91,153.20

Step by Step Solution

1. Step 1: Write the proportion equation
   166,604.72 : 229,920.24 = 91,153.20 : x
2. Step 2: Convert to fraction form
   166,604.72/229,920.24 = 91,153.20/x
3. Step 3: Cross multiply
   166,604.72x = 229,920.24 × 91,153.20
4. Step 4: Simplify right side
   166,604.72x = 20,957,965,620.77
5. Step 5: Solve for x
   x = 20,957,965,620.77/166,604.72
6. Step 6: Final answer
   x = 125,794.55