Finding the Fourth Proportional to 120,308.92, 166,002.78 and 75,571

Step by Step Solution

1. Step 1: Write the proportion equation
   120,308.92 : 166,002.78 = 75,571 : x
2. Step 2: Convert to fraction form
   120,308.92/166,002.78 = 75,571/x
3. Step 3: Cross multiply
   120,308.92x = 166,002.78 × 75,571
4. Step 4: Simplify right side
   120,308.92x = 12,544,996,087.38
5. Step 5: Solve for x
   x = 12,544,996,087.38/120,308.92
6. Step 6: Final answer
   x = 104,273.20