Finding the Fourth Proportional to 30,953.58, 42,715.28 and 16,806.42

Step by Step Solution

1. Step 1: Write the proportion equation
   30,953.58 : 42,715.28 = 16,806.42 : x
2. Step 2: Convert to fraction form
   30,953.58/42,715.28 = 16,806.42/x
3. Step 3: Cross multiply
   30,953.58x = 42,715.28 × 16,806.42
4. Step 4: Simplify right side
   30,953.58x = 717,890,936.10
5. Step 5: Solve for x
   x = 717,890,936.10/30,953.58
6. Step 6: Final answer
   x = 23,192.50