Finding the Fourth Proportional to 31,093.46, 42,908.90 and 16,946.28

Step by Step Solution

1. Step 1: Write the proportion equation
   31,093.46 : 42,908.90 = 16,946.28 : x
2. Step 2: Convert to fraction form
   31,093.46/42,908.90 = 16,946.28/x
3. Step 3: Cross multiply
   31,093.46x = 42,908.90 × 16,946.28
4. Step 4: Simplify right side
   31,093.46x = 727,146,233.89
5. Step 5: Solve for x
   x = 727,146,233.89/31,093.46
6. Step 6: Final answer
   x = 23,385.83