Finding the Fourth Proportional to 30,953.98, 42,715.83 and 16,806.70

Step by Step Solution

1. Step 1: Write the proportion equation
   30,953.98 : 42,715.83 = 16,806.70 : x
2. Step 2: Convert to fraction form
   30,953.98/42,715.83 = 16,806.70/x
3. Step 3: Cross multiply
   30,953.98x = 42,715.83 × 16,806.70
4. Step 4: Simplify right side
   30,953.98x = 717,912,140.06
5. Step 5: Solve for x
   x = 717,912,140.06/30,953.98
6. Step 6: Final answer
   x = 23,192.89