Finding the Fourth Proportional to 71,158.23, 106,743.50 and 18,567.72

Step by Step Solution

1. Step 1: Write the proportion equation
   71,158.23 : 106,743.50 = 18,567.72 : x
2. Step 2: Convert to fraction form
   71,158.23/106,743.50 = 18,567.72/x
3. Step 3: Cross multiply
   71,158.23x = 106,743.50 × 18,567.72
4. Step 4: Simplify right side
   71,158.23x = 1,981,983,419.82
5. Step 5: Solve for x
   x = 1,981,983,419.82/71,158.23
6. Step 6: Final answer
   x = 27,853.19