Finding the Fourth Proportional to 140,686.52, 194,165.88 and 80,243.31

Step by Step Solution

1. Step 1: Write the proportion equation
   140,686.52 : 194,165.88 = 80,243.31 : x
2. Step 2: Convert to fraction form
   140,686.52/194,165.88 = 80,243.31/x
3. Step 3: Cross multiply
   140,686.52x = 194,165.88 × 80,243.31
4. Step 4: Simplify right side
   140,686.52x = 15,580,512,900.26
5. Step 5: Solve for x
   x = 15,580,512,900.26/140,686.52
6. Step 6: Final answer
   x = 110,746.31