Finding the Fourth Proportional to 166,557.40, 229,847.34 and 91,105

Step by Step Solution

1. Step 1: Write the proportion equation
   166,557.40 : 229,847.34 = 91,105 : x
2. Step 2: Convert to fraction form
   166,557.40/229,847.34 = 91,105/x
3. Step 3: Cross multiply
   166,557.40x = 229,847.34 × 91,105
4. Step 4: Simplify right side
   166,557.40x = 20,940,241,910.70
5. Step 5: Solve for x
   x = 20,940,241,910.70/166,557.40
6. Step 6: Final answer
   x = 125,723.88