Finding the Fourth Proportional to 42,390.40, 58,504.84 and 25,395.37

Step by Step Solution

1. Step 1: Write the proportion equation
   42,390.40 : 58,504.84 = 25,395.37 : x
2. Step 2: Convert to fraction form
   42,390.40/58,504.84 = 25,395.37/x
3. Step 3: Cross multiply
   42,390.40x = 58,504.84 × 25,395.37
4. Step 4: Simplify right side
   42,390.40x = 1,485,751,848.84
5. Step 5: Solve for x
   x = 1,485,751,848.84/42,390.40
6. Step 6: Final answer
   x = 35,049.25