Finding the Fourth Proportional to 144,286.45, 199,118.59 and 80,624.09

Step by Step Solution

1. Step 1: Write the proportion equation
   144,286.45 : 199,118.59 = 80,624.09 : x
2. Step 2: Convert to fraction form
   144,286.45/199,118.59 = 80,624.09/x
3. Step 3: Cross multiply
   144,286.45x = 199,118.59 × 80,624.09
4. Step 4: Simplify right side
   144,286.45x = 16,053,755,417.07
5. Step 5: Solve for x
   x = 16,053,755,417.07/144,286.45
6. Step 6: Final answer
   x = 111,263.09