Finding the Fourth Proportional to 140,898.74, 194,453.72 and 80,478.41

Step by Step Solution

1. Step 1: Write the proportion equation
   140,898.74 : 194,453.72 = 80,478.41 : x
2. Step 2: Convert to fraction form
   140,898.74/194,453.72 = 80,478.41/x
3. Step 3: Cross multiply
   140,898.74x = 194,453.72 × 80,478.41
4. Step 4: Simplify right side
   140,898.74x = 15,649,326,891.52
5. Step 5: Solve for x
   x = 15,649,326,891.52/140,898.74
6. Step 6: Final answer
   x = 111,067.90