Finding the Fourth Proportional to 140,707, 194,175.68 and 81,091

Step by Step Solution

1. Step 1: Write the proportion equation
   140,707 : 194,175.68 = 81,091 : x
2. Step 2: Convert to fraction form
   140,707/194,175.68 = 81,091/x
3. Step 3: Cross multiply
   140,707x = 194,175.68 × 81,091
4. Step 4: Simplify right side
   140,707x = 15,745,900,066.88
5. Step 5: Solve for x
   x = 15,745,900,066.88/140,707
6. Step 6: Final answer
   x = 111,905.59