Finding the Fourth Proportional to 31,036.64, 42,829.29 and 16,889.49

Step by Step Solution

1. Step 1: Write the proportion equation
   31,036.64 : 42,829.29 = 16,889.49 : x
2. Step 2: Convert to fraction form
   31,036.64/42,829.29 = 16,889.49/x
3. Step 3: Cross multiply
   31,036.64x = 42,829.29 × 16,889.49
4. Step 4: Simplify right side
   31,036.64x = 723,364,865.16
5. Step 5: Solve for x
   x = 723,364,865.16/31,036.64
6. Step 6: Final answer
   x = 23,306.81