Finding the Fourth Proportional to 42,080.88, 63,115.38 and 17,131.80

Step by Step Solution

1. Step 1: Write the proportion equation
   42,080.88 : 63,115.38 = 17,131.80 : x
2. Step 2: Convert to fraction form
   42,080.88/63,115.38 = 17,131.80/x
3. Step 3: Cross multiply
   42,080.88x = 63,115.38 × 17,131.80
4. Step 4: Simplify right side
   42,080.88x = 1,081,280,067.08
5. Step 5: Solve for x
   x = 1,081,280,067.08/42,080.88
6. Step 6: Final answer
   x = 25,695.28