Finding the Fourth Proportional to 140,731.29, 194,160.51 and 80,258.31

Step by Step Solution

1. Step 1: Write the proportion equation
   140,731.29 : 194,160.51 = 80,258.31 : x
2. Step 2: Convert to fraction form
   140,731.29/194,160.51 = 80,258.31/x
3. Step 3: Cross multiply
   140,731.29x = 194,160.51 × 80,258.31
4. Step 4: Simplify right side
   140,731.29x = 15,582,994,401.34
5. Step 5: Solve for x
   x = 15,582,994,401.34/140,731.29
6. Step 6: Final answer
   x = 110,728.71