Finding the Fourth Proportional to 105,821.70, 158,732.56 and 82,465.62

Step by Step Solution

1. Step 1: Write the proportion equation
   105,821.70 : 158,732.56 = 82,465.62 : x
2. Step 2: Convert to fraction form
   105,821.70/158,732.56 = 82,465.62/x
3. Step 3: Cross multiply
   105,821.70x = 158,732.56 × 82,465.62
4. Step 4: Simplify right side
   105,821.70x = 13,089,978,974.59
5. Step 5: Solve for x
   x = 13,089,978,974.59/105,821.70
6. Step 6: Final answer
   x = 123,698.44