Finding the Fourth Proportional to 140,334.56, 193,596.72 and 80,684

Step by Step Solution

1. Step 1: Write the proportion equation
   140,334.56 : 193,596.72 = 80,684 : x
2. Step 2: Convert to fraction form
   140,334.56/193,596.72 = 80,684/x
3. Step 3: Cross multiply
   140,334.56x = 193,596.72 × 80,684
4. Step 4: Simplify right side
   140,334.56x = 15,620,157,756.48
5. Step 5: Solve for x
   x = 15,620,157,756.48/140,334.56
6. Step 6: Final answer
   x = 111,306.56