Finding the Fourth Proportional to 42,109.20, 63,185.76 and 17,167.68

Step by Step Solution

1. Step 1: Write the proportion equation
   42,109.20 : 63,185.76 = 17,167.68 : x
2. Step 2: Convert to fraction form
   42,109.20/63,185.76 = 17,167.68/x
3. Step 3: Cross multiply
   42,109.20x = 63,185.76 × 17,167.68
4. Step 4: Simplify right side
   42,109.20x = 1,084,752,908.24
5. Step 5: Solve for x
   x = 1,084,752,908.24/42,109.20
6. Step 6: Final answer
   x = 25,760.47