Finding the Fourth Proportional to 31,088, 42,901.46 and 16,940.84

Step by Step Solution

1. Step 1: Write the proportion equation
   31,088 : 42,901.46 = 16,940.84 : x
2. Step 2: Convert to fraction form
   31,088/42,901.46 = 16,940.84/x
3. Step 3: Cross multiply
   31,088x = 42,901.46 × 16,940.84
4. Step 4: Simplify right side
   31,088x = 726,786,769.63
5. Step 5: Solve for x
   x = 726,786,769.63/31,088
6. Step 6: Final answer
   x = 23,378.37