Finding the Fourth Proportional to 42,782.33, 59,039.55 and 25,786.80

Step by Step Solution

1. Step 1: Write the proportion equation
   42,782.33 : 59,039.55 = 25,786.80 : x
2. Step 2: Convert to fraction form
   42,782.33/59,039.55 = 25,786.80/x
3. Step 3: Cross multiply
   42,782.33x = 59,039.55 × 25,786.80
4. Step 4: Simplify right side
   42,782.33x = 1,522,441,067.94
5. Step 5: Solve for x
   x = 1,522,441,067.94/42,782.33
6. Step 6: Final answer
   x = 35,585.75