Finding the Fourth Proportional to 166,105.11, 229,221.86 and 90,654.15

Step by Step Solution

1. Step 1: Write the proportion equation
   166,105.11 : 229,221.86 = 90,654.15 : x
2. Step 2: Convert to fraction form
   166,105.11/229,221.86 = 90,654.15/x
3. Step 3: Cross multiply
   166,105.11x = 229,221.86 × 90,654.15
4. Step 4: Simplify right side
   166,105.11x = 20,779,912,426.45
5. Step 5: Solve for x
   x = 20,779,912,426.45/166,105.11
6. Step 6: Final answer
   x = 125,100.98