Finding the Fourth Proportional to 42,990.72, 59,339.58 and 25,995

Step by Step Solution

1. Step 1: Write the proportion equation
   42,990.72 : 59,339.58 = 25,995 : x
2. Step 2: Convert to fraction form
   42,990.72/59,339.58 = 25,995/x
3. Step 3: Cross multiply
   42,990.72x = 59,339.58 × 25,995
4. Step 4: Simplify right side
   42,990.72x = 1,542,532,382.10
5. Step 5: Solve for x
   x = 1,542,532,382.10/42,990.72
6. Step 6: Final answer
   x = 35,880.59