Finding the Fourth Proportional to 120,426.96, 166,189.22 and 65,979.37

Step by Step Solution

1. Step 1: Write the proportion equation
   120,426.96 : 166,189.22 = 65,979.37 : x
2. Step 2: Convert to fraction form
   120,426.96/166,189.22 = 65,979.37/x
3. Step 3: Cross multiply
   120,426.96x = 166,189.22 × 65,979.37
4. Step 4: Simplify right side
   120,426.96x = 10,965,060,036.39
5. Step 5: Solve for x
   x = 10,965,060,036.39/120,426.96
6. Step 6: Final answer
   x = 91,051.54