Finding the Fourth Proportional to 31,014.63, 42,801.08 and 16,868.39

Step by Step Solution

1. Step 1: Write the proportion equation
   31,014.63 : 42,801.08 = 16,868.39 : x
2. Step 2: Convert to fraction form
   31,014.63/42,801.08 = 16,868.39/x
3. Step 3: Cross multiply
   31,014.63x = 42,801.08 × 16,868.39
4. Step 4: Simplify right side
   31,014.63x = 721,985,011.51
5. Step 5: Solve for x
   x = 721,985,011.51/31,014.63
6. Step 6: Final answer
   x = 23,278.85