Finding the Fourth Proportional to 42,069.92, 63,129 and 17,105.36

Step by Step Solution

1. Step 1: Write the proportion equation
   42,069.92 : 63,129 = 17,105.36 : x
2. Step 2: Convert to fraction form
   42,069.92/63,129 = 17,105.36/x
3. Step 3: Cross multiply
   42,069.92x = 63,129 × 17,105.36
4. Step 4: Simplify right side
   42,069.92x = 1,079,844,271.44
5. Step 5: Solve for x
   x = 1,079,844,271.44/42,069.92
6. Step 6: Final answer
   x = 25,667.85