Finding the Fourth Proportional to 120,406.01, 166,158.45 and 65,957.76

Step by Step Solution

1. Step 1: Write the proportion equation
   120,406.01 : 166,158.45 = 65,957.76 : x
2. Step 2: Convert to fraction form
   120,406.01/166,158.45 = 65,957.76/x
3. Step 3: Cross multiply
   120,406.01x = 166,158.45 × 65,957.76
4. Step 4: Simplify right side
   120,406.01x = 10,959,439,167.07
5. Step 5: Solve for x
   x = 10,959,439,167.07/120,406.01
6. Step 6: Final answer
   x = 91,020.70