Finding the Fourth Proportional to 31,059.79, 42,863.00 and 16,912.62

Step by Step Solution

1. Step 1: Write the proportion equation
   31,059.79 : 42,863.00 = 16,912.62 : x
2. Step 2: Convert to fraction form
   31,059.79/42,863.00 = 16,912.62/x
3. Step 3: Cross multiply
   31,059.79x = 42,863.00 × 16,912.62
4. Step 4: Simplify right side
   31,059.79x = 724,925,546.50
5. Step 5: Solve for x
   x = 724,925,546.50/31,059.79
6. Step 6: Final answer
   x = 23,339.68