Finding the Fourth Proportional to 31,032.57, 42,825.84 and 16,886.31

Step by Step Solution

1. Step 1: Write the proportion equation
   31,032.57 : 42,825.84 = 16,886.31 : x
2. Step 2: Convert to fraction form
   31,032.57/42,825.84 = 16,886.31/x
3. Step 3: Cross multiply
   31,032.57x = 42,825.84 × 16,886.31
4. Step 4: Simplify right side
   31,032.57x = 723,170,410.25
5. Step 5: Solve for x
   x = 723,170,410.25/31,032.57
6. Step 6: Final answer
   x = 23,303.59