Finding the Fourth Proportional to 105,069.40, 144,816.06 and 82,259.80

Step by Step Solution

1. Step 1: Write the proportion equation
   105,069.40 : 144,816.06 = 82,259.80 : x
2. Step 2: Convert to fraction form
   105,069.40/144,816.06 = 82,259.80/x
3. Step 3: Cross multiply
   105,069.40x = 144,816.06 × 82,259.80
4. Step 4: Simplify right side
   105,069.40x = 11,912,540,132.39
5. Step 5: Solve for x
   x = 11,912,540,132.39/105,069.40
6. Step 6: Final answer
   x = 113,377.83