Finding the Fourth Proportional to 166,320.57, 229,523.10 and 90,870.69

Step by Step Solution

1. Step 1: Write the proportion equation
   166,320.57 : 229,523.10 = 90,870.69 : x
2. Step 2: Convert to fraction form
   166,320.57/229,523.10 = 90,870.69/x
3. Step 3: Cross multiply
   166,320.57x = 229,523.10 × 90,870.69
4. Step 4: Simplify right side
   166,320.57x = 20,856,922,467.94
5. Step 5: Solve for x
   x = 20,856,922,467.94/166,320.57
6. Step 6: Final answer
   x = 125,401.94