Finding the Fourth Proportional to 144,078.89, 198,810.52 and 80,419.37

Step by Step Solution

1. Step 1: Write the proportion equation
   144,078.89 : 198,810.52 = 80,419.37 : x
2. Step 2: Convert to fraction form
   144,078.89/198,810.52 = 80,419.37/x
3. Step 3: Cross multiply
   144,078.89x = 198,810.52 × 80,419.37
4. Step 4: Simplify right side
   144,078.89x = 15,988,215,572.67
5. Step 5: Solve for x
   x = 15,988,215,572.67/144,078.89
6. Step 6: Final answer
   x = 110,968.48