Finding the Fourth Proportional to 31,109.24, 42,930.78 and 16,962.14

Step by Step Solution

1. Step 1: Write the proportion equation
   31,109.24 : 42,930.78 = 16,962.14 : x
2. Step 2: Convert to fraction form
   31,109.24/42,930.78 = 16,962.14/x
3. Step 3: Cross multiply
   31,109.24x = 42,930.78 × 16,962.14
4. Step 4: Simplify right side
   31,109.24x = 728,197,900.67
5. Step 5: Solve for x
   x = 728,197,900.67/31,109.24
6. Step 6: Final answer
   x = 23,407.77