Finding the Fourth Proportional to 42,661.80, 63,965.22 and 17,719.02

Step by Step Solution

1. Step 1: Write the proportion equation
   42,661.80 : 63,965.22 = 17,719.02 : x
2. Step 2: Convert to fraction form
   42,661.80/63,965.22 = 17,719.02/x
3. Step 3: Cross multiply
   42,661.80x = 63,965.22 × 17,719.02
4. Step 4: Simplify right side
   42,661.80x = 1,133,401,012.48
5. Step 5: Solve for x
   x = 1,133,401,012.48/42,661.80
6. Step 6: Final answer
   x = 26,567.12