Finding the Fourth Proportional to 144,057.99, 198,820.07 and 80,399.89

Step by Step Solution

1. Step 1: Write the proportion equation
   144,057.99 : 198,820.07 = 80,399.89 : x
2. Step 2: Convert to fraction form
   144,057.99/198,820.07 = 80,399.89/x
3. Step 3: Cross multiply
   144,057.99x = 198,820.07 × 80,399.89
4. Step 4: Simplify right side
   144,057.99x = 15,985,111,905.82
5. Step 5: Solve for x
   x = 15,985,111,905.82/144,057.99
6. Step 6: Final answer
   x = 110,963.03