Finding the Fourth Proportional to 42,139.59, 63,167.91 and 17,197.17

Step by Step Solution

1. Step 1: Write the proportion equation
   42,139.59 : 63,167.91 = 17,197.17 : x
2. Step 2: Convert to fraction form
   42,139.59/63,167.91 = 17,197.17/x
3. Step 3: Cross multiply
   42,139.59x = 63,167.91 × 17,197.17
4. Step 4: Simplify right side
   42,139.59x = 1,086,309,286.81
5. Step 5: Solve for x
   x = 1,086,309,286.81/42,139.59
6. Step 6: Final answer
   x = 25,778.83