Finding the Fourth Proportional to 31,011.03, 42,794.82 and 16,863.57

Step by Step Solution

1. Step 1: Write the proportion equation
   31,011.03 : 42,794.82 = 16,863.57 : x
2. Step 2: Convert to fraction form
   31,011.03/42,794.82 = 16,863.57/x
3. Step 3: Cross multiply
   31,011.03x = 42,794.82 × 16,863.57
4. Step 4: Simplify right side
   31,011.03x = 721,673,442.71
5. Step 5: Solve for x
   x = 721,673,442.71/31,011.03
6. Step 6: Final answer
   x = 23,271.51