Finding the Fourth Proportional to 144,564.80, 199,499.83 and 80,897.72

Step by Step Solution

1. Step 1: Write the proportion equation
   144,564.80 : 199,499.83 = 80,897.72 : x
2. Step 2: Convert to fraction form
   144,564.80/199,499.83 = 80,897.72/x
3. Step 3: Cross multiply
   144,564.80x = 199,499.83 × 80,897.72
4. Step 4: Simplify right side
   144,564.80x = 16,139,080,187.64
5. Step 5: Solve for x
   x = 16,139,080,187.64/144,564.80
6. Step 6: Final answer
   x = 111,639.08