Finding the Fourth Proportional to 141,049.37, 194,648.12 and 80,621.31

Step by Step Solution

1. Step 1: Write the proportion equation
   141,049.37 : 194,648.12 = 80,621.31 : x
2. Step 2: Convert to fraction form
   141,049.37/194,648.12 = 80,621.31/x
3. Step 3: Cross multiply
   141,049.37x = 194,648.12 × 80,621.31
4. Step 4: Simplify right side
   141,049.37x = 15,692,786,020.33
5. Step 5: Solve for x
   x = 15,692,786,020.33/141,049.37
6. Step 6: Final answer
   x = 111,257.40