Finding the Fourth Proportional to 31,109.92, 42,931.02 and 16,962.46

Step by Step Solution

1. Step 1: Write the proportion equation
   31,109.92 : 42,931.02 = 16,962.46 : x
2. Step 2: Convert to fraction form
   31,109.92/42,931.02 = 16,962.46/x
3. Step 3: Cross multiply
   31,109.92x = 42,931.02 × 16,962.46
4. Step 4: Simplify right side
   31,109.92x = 728,215,709.51
5. Step 5: Solve for x
   x = 728,215,709.51/31,109.92
6. Step 6: Final answer
   x = 23,407.83