Finding the Fourth Proportional to 140,978.07, 194,560.03 and 80,547.42

Step by Step Solution

1. Step 1: Write the proportion equation
   140,978.07 : 194,560.03 = 80,547.42 : x
2. Step 2: Convert to fraction form
   140,978.07/194,560.03 = 80,547.42/x
3. Step 3: Cross multiply
   140,978.07x = 194,560.03 × 80,547.42
4. Step 4: Simplify right side
   140,978.07x = 15,671,308,451.62
5. Step 5: Solve for x
   x = 15,671,308,451.62/140,978.07
6. Step 6: Final answer
   x = 111,161.32