Finding the Fourth Proportional to 140,969.23, 194,519.61 and 80,543.78

Step by Step Solution

1. Step 1: Write the proportion equation
   140,969.23 : 194,519.61 = 80,543.78 : x
2. Step 2: Convert to fraction form
   140,969.23/194,519.61 = 80,543.78/x
3. Step 3: Cross multiply
   140,969.23x = 194,519.61 × 80,543.78
4. Step 4: Simplify right side
   140,969.23x = 15,667,344,857.79
5. Step 5: Solve for x
   x = 15,667,344,857.79/140,969.23
6. Step 6: Final answer
   x = 111,140.18