Finding the Fourth Proportional to 31,005.81, 42,788.88 and 17,576.52

Step by Step Solution

1. Step 1: Write the proportion equation
   31,005.81 : 42,788.88 = 17,576.52 : x
2. Step 2: Convert to fraction form
   31,005.81/42,788.88 = 17,576.52/x
3. Step 3: Cross multiply
   31,005.81x = 42,788.88 × 17,576.52
4. Step 4: Simplify right side
   31,005.81x = 752,079,605.10
5. Step 5: Solve for x
   x = 752,079,605.10/31,005.81
6. Step 6: Final answer
   x = 24,256.09