Finding the Fourth Proportional to 144,303.69, 199,138.59 and 80,641.47

Step by Step Solution

1. Step 1: Write the proportion equation
   144,303.69 : 199,138.59 = 80,641.47 : x
2. Step 2: Convert to fraction form
   144,303.69/199,138.59 = 80,641.47/x
3. Step 3: Cross multiply
   144,303.69x = 199,138.59 × 80,641.47
4. Step 4: Simplify right side
   144,303.69x = 16,058,828,631.33
5. Step 5: Solve for x
   x = 16,058,828,631.33/144,303.69
6. Step 6: Final answer
   x = 111,284.95