Finding the Fourth Proportional to 30,868.50, 42,598.53 and 16,721.46

Step by Step Solution

1. Step 1: Write the proportion equation
   30,868.50 : 42,598.53 = 16,721.46 : x
2. Step 2: Convert to fraction form
   30,868.50/42,598.53 = 16,721.46/x
3. Step 3: Cross multiply
   30,868.50x = 42,598.53 × 16,721.46
4. Step 4: Simplify right side
   30,868.50x = 712,309,615.45
5. Step 5: Solve for x
   x = 712,309,615.45/30,868.50
6. Step 6: Final answer
   x = 23,075.61