Finding the Fourth Proportional to 120,339.92, 166,062.76 and 65,881.67

Step by Step Solution

1. Step 1: Write the proportion equation
   120,339.92 : 166,062.76 = 65,881.67 : x
2. Step 2: Convert to fraction form
   120,339.92/166,062.76 = 65,881.67/x
3. Step 3: Cross multiply
   120,339.92x = 166,062.76 × 65,881.67
4. Step 4: Simplify right side
   120,339.92x = 10,940,490,793.89
5. Step 5: Solve for x
   x = 10,940,490,793.89/120,339.92
6. Step 6: Final answer
   x = 90,913.23