Finding the Fourth Proportional to 31,002.44, 42,783.67 and 16,855.59

Step by Step Solution

1. Step 1: Write the proportion equation
   31,002.44 : 42,783.67 = 16,855.59 : x
2. Step 2: Convert to fraction form
   31,002.44/42,783.67 = 16,855.59/x
3. Step 3: Cross multiply
   31,002.44x = 42,783.67 × 16,855.59
4. Step 4: Simplify right side
   31,002.44x = 721,143,744.16
5. Step 5: Solve for x
   x = 721,143,744.16/31,002.44
6. Step 6: Final answer
   x = 23,260.87