Finding the Fourth Proportional to 166,771.27, 230,144.50 and 90,290.42

Step by Step Solution

1. Step 1: Write the proportion equation
   166,771.27 : 230,144.50 = 90,290.42 : x
2. Step 2: Convert to fraction form
   166,771.27/230,144.50 = 90,290.42/x
3. Step 3: Cross multiply
   166,771.27x = 230,144.50 × 90,290.42
4. Step 4: Simplify right side
   166,771.27x = 20,779,843,565.69
5. Step 5: Solve for x
   x = 20,779,843,565.69/166,771.27
6. Step 6: Final answer
   x = 124,600.86