Finding the Fourth Proportional to 107,939.24, 148,966.86 and 80,667.96

Step by Step Solution

1. Step 1: Write the proportion equation
   107,939.24 : 148,966.86 = 80,667.96 : x
2. Step 2: Convert to fraction form
   107,939.24/148,966.86 = 80,667.96/x
3. Step 3: Cross multiply
   107,939.24x = 148,966.86 × 80,667.96
4. Step 4: Simplify right side
   107,939.24x = 12,016,852,703.81
5. Step 5: Solve for x
   x = 12,016,852,703.81/107,939.24
6. Step 6: Final answer
   x = 111,329.79