Finding the Fourth Proportional to 143,380.78, 197,843.31 and 82,957.05

Step by Step Solution

1. Step 1: Write the proportion equation
   143,380.78 : 197,843.31 = 82,957.05 : x
2. Step 2: Convert to fraction form
   143,380.78/197,843.31 = 82,957.05/x
3. Step 3: Cross multiply
   143,380.78x = 197,843.31 × 82,957.05
4. Step 4: Simplify right side
   143,380.78x = 16,412,497,081.62
5. Step 5: Solve for x
   x = 16,412,497,081.62/143,380.78
6. Step 6: Final answer
   x = 114,467.90