Finding the Fourth Proportional to 120,357.63, 166,096.13 and 65,912.10

Step by Step Solution

1. Step 1: Write the proportion equation
   120,357.63 : 166,096.13 = 65,912.10 : x
2. Step 2: Convert to fraction form
   120,357.63/166,096.13 = 65,912.10/x
3. Step 3: Cross multiply
   120,357.63x = 166,096.13 × 65,912.10
4. Step 4: Simplify right side
   120,357.63x = 10,947,744,400.61
5. Step 5: Solve for x
   x = 10,947,744,400.61/120,357.63
6. Step 6: Final answer
   x = 90,960.12