Finding the Fourth Proportional to 71,387.73, 107,081.83 and 18,079.69

Step by Step Solution

1. Step 1: Write the proportion equation
   71,387.73 : 107,081.83 = 18,079.69 : x
2. Step 2: Convert to fraction form
   71,387.73/107,081.83 = 18,079.69/x
3. Step 3: Cross multiply
   71,387.73x = 107,081.83 × 18,079.69
4. Step 4: Simplify right side
   71,387.73x = 1,936,005,755.62
5. Step 5: Solve for x
   x = 1,936,005,755.62/71,387.73
6. Step 6: Final answer
   x = 27,119.59