Finding the Fourth Proportional to 42,778.43, 59,036.48 and 25,788.07

Step by Step Solution

1. Step 1: Write the proportion equation
   42,778.43 : 59,036.48 = 25,788.07 : x
2. Step 2: Convert to fraction form
   42,778.43/59,036.48 = 25,788.07/x
3. Step 3: Cross multiply
   42,778.43x = 59,036.48 × 25,788.07
4. Step 4: Simplify right side
   42,778.43x = 1,522,436,878.79
5. Step 5: Solve for x
   x = 1,522,436,878.79/42,778.43
6. Step 6: Final answer
   x = 35,588.89