Finding the Fourth Proportional to 39,142.91, 54,019.89 and 22,147.16

Step by Step Solution

1. Step 1: Write the proportion equation
   39,142.91 : 54,019.89 = 22,147.16 : x
2. Step 2: Convert to fraction form
   39,142.91/54,019.89 = 22,147.16/x
3. Step 3: Cross multiply
   39,142.91x = 54,019.89 × 22,147.16
4. Step 4: Simplify right side
   39,142.91x = 1,196,386,876.91
5. Step 5: Solve for x
   x = 1,196,386,876.91/39,142.91
6. Step 6: Final answer
   x = 30,564.59