Finding the Fourth Proportional to 42,578.26, 58,713.46 and 31,806.25

Step by Step Solution

1. Step 1: Write the proportion equation
   42,578.26 : 58,713.46 = 31,806.25 : x
2. Step 2: Convert to fraction form
   42,578.26/58,713.46 = 31,806.25/x
3. Step 3: Cross multiply
   42,578.26x = 58,713.46 × 31,806.25
4. Step 4: Simplify right side
   42,578.26x = 1,867,454,760.83
5. Step 5: Solve for x
   x = 1,867,454,760.83/42,578.26
6. Step 6: Final answer
   x = 43,859.35