Finding the Fourth Proportional to 144,770.69, 199,789.03 and 81,106.31

Step by Step Solution

1. Step 1: Write the proportion equation
   144,770.69 : 199,789.03 = 81,106.31 : x
2. Step 2: Convert to fraction form
   144,770.69/199,789.03 = 81,106.31/x
3. Step 3: Cross multiply
   144,770.69x = 199,789.03 × 81,106.31
4. Step 4: Simplify right side
   144,770.69x = 16,204,151,602.63
5. Step 5: Solve for x
   x = 16,204,151,602.63/144,770.69
6. Step 6: Final answer
   x = 111,929.78