Finding the Fourth Proportional to 105,727.61, 158,310.83 and 82,701.99

Step by Step Solution

1. Step 1: Write the proportion equation
   105,727.61 : 158,310.83 = 82,701.99 : x
2. Step 2: Convert to fraction form
   105,727.61/158,310.83 = 82,701.99/x
3. Step 3: Cross multiply
   105,727.61x = 158,310.83 × 82,701.99
4. Step 4: Simplify right side
   105,727.61x = 13,092,620,266.04
5. Step 5: Solve for x
   x = 13,092,620,266.04/105,727.61
6. Step 6: Final answer
   x = 123,833.51