Finding the Fourth Proportional to 105,513.36, 145,678.68 and 82,943.52

Step by Step Solution

1. Step 1: Write the proportion equation
   105,513.36 : 145,678.68 = 82,943.52 : x
2. Step 2: Convert to fraction form
   105,513.36/145,678.68 = 82,943.52/x
3. Step 3: Cross multiply
   105,513.36x = 145,678.68 × 82,943.52
4. Step 4: Simplify right side
   105,513.36x = 12,083,102,508.15
5. Step 5: Solve for x
   x = 12,083,102,508.15/105,513.36
6. Step 6: Final answer
   x = 114,517.28