Finding the Fourth Proportional to 131,945.42, 182,080.17 and 78,198.62

Step by Step Solution

1. Step 1: Write the proportion equation
   131,945.42 : 182,080.17 = 78,198.62 : x
2. Step 2: Convert to fraction form
   131,945.42/182,080.17 = 78,198.62/x
3. Step 3: Cross multiply
   131,945.42x = 182,080.17 × 78,198.62
4. Step 4: Simplify right side
   131,945.42x = 14,238,417,112.96
5. Step 5: Solve for x
   x = 14,238,417,112.96/131,945.42
6. Step 6: Final answer
   x = 107,911.41