Finding the Fourth Proportional to 140,978.57, 194,560.72 and 80,547.92

Step by Step Solution

1. Step 1: Write the proportion equation
   140,978.57 : 194,560.72 = 80,547.92 : x
2. Step 2: Convert to fraction form
   140,978.57/194,560.72 = 80,547.92/x
3. Step 3: Cross multiply
   140,978.57x = 194,560.72 × 80,547.92
4. Step 4: Simplify right side
   140,978.57x = 15,671,461,309.70
5. Step 5: Solve for x
   x = 15,671,461,309.70/140,978.57
6. Step 6: Final answer
   x = 111,162.01