Finding the Fourth Proportional to 105,143.52, 157,676.52 and 82,698.12

Step by Step Solution

1. Step 1: Write the proportion equation
   105,143.52 : 157,676.52 = 82,698.12 : x
2. Step 2: Convert to fraction form
   105,143.52/157,676.52 = 82,698.12/x
3. Step 3: Cross multiply
   105,143.52x = 157,676.52 × 82,698.12
4. Step 4: Simplify right side
   105,143.52x = 13,039,551,772.14
5. Step 5: Solve for x
   x = 13,039,551,772.14/105,143.52
6. Step 6: Final answer
   x = 124,016.69