Finding the Fourth Proportional to 140,978.52, 194,532.39 and 80,553.06

Step by Step Solution

1. Step 1: Write the proportion equation
   140,978.52 : 194,532.39 = 80,553.06 : x
2. Step 2: Convert to fraction form
   140,978.52/194,532.39 = 80,553.06/x
3. Step 3: Cross multiply
   140,978.52x = 194,532.39 × 80,553.06
4. Step 4: Simplify right side
   140,978.52x = 15,670,179,283.61
5. Step 5: Solve for x
   x = 15,670,179,283.61/140,978.52
6. Step 6: Final answer
   x = 111,152.96