Finding the Fourth Proportional to 140,116.59, 193,359.85 and 79,687.15

Step by Step Solution

1. Step 1: Write the proportion equation
   140,116.59 : 193,359.85 = 79,687.15 : x
2. Step 2: Convert to fraction form
   140,116.59/193,359.85 = 79,687.15/x
3. Step 3: Cross multiply
   140,116.59x = 193,359.85 × 79,687.15
4. Step 4: Simplify right side
   140,116.59x = 15,408,294,688.31
5. Step 5: Solve for x
   x = 15,408,294,688.31/140,116.59
6. Step 6: Final answer
   x = 109,967.67