Finding the Fourth Proportional to 120,409.01, 166,162.59 and 65,960.76

Step by Step Solution

1. Step 1: Write the proportion equation
   120,409.01 : 166,162.59 = 65,960.76 : x
2. Step 2: Convert to fraction form
   120,409.01/166,162.59 = 65,960.76/x
3. Step 3: Cross multiply
   120,409.01x = 166,162.59 × 65,960.76
4. Step 4: Simplify right side
   120,409.01x = 10,960,210,719.97
5. Step 5: Solve for x
   x = 10,960,210,719.97/120,409.01
6. Step 6: Final answer
   x = 91,024.84