Finding the Fourth Proportional to 42,661.54, 58,858.41 and 25,891.30

Step by Step Solution

1. Step 1: Write the proportion equation
   42,661.54 : 58,858.41 = 25,891.30 : x
2. Step 2: Convert to fraction form
   42,661.54/58,858.41 = 25,891.30/x
3. Step 3: Cross multiply
   42,661.54x = 58,858.41 × 25,891.30
4. Step 4: Simplify right side
   42,661.54x = 1,523,920,750.83
5. Step 5: Solve for x
   x = 1,523,920,750.83/42,661.54
6. Step 6: Final answer
   x = 35,721.18