Finding the Fourth Proportional to 140,023.12, 193,243.38 and 79,612.72

Step by Step Solution

1. Step 1: Write the proportion equation
   140,023.12 : 193,243.38 = 79,612.72 : x
2. Step 2: Convert to fraction form
   140,023.12/193,243.38 = 79,612.72/x
3. Step 3: Cross multiply
   140,023.12x = 193,243.38 × 79,612.72
4. Step 4: Simplify right side
   140,023.12x = 15,384,631,103.79
5. Step 5: Solve for x
   x = 15,384,631,103.79/140,023.12
6. Step 6: Final answer
   x = 109,872.08