Finding the Fourth Proportional to 120,391.43, 166,141.88 and 69,403.25

Step by Step Solution

1. Step 1: Write the proportion equation
   120,391.43 : 166,141.88 = 69,403.25 : x
2. Step 2: Convert to fraction form
   120,391.43/166,141.88 = 69,403.25/x
3. Step 3: Cross multiply
   120,391.43x = 166,141.88 × 69,403.25
4. Step 4: Simplify right side
   120,391.43x = 11,530,785,255.38
5. Step 5: Solve for x
   x = 11,530,785,255.38/120,391.43
6. Step 6: Final answer
   x = 95,777.46