Finding the Fourth Proportional to 30,983.31, 42,756.88 and 16,836.16

Step by Step Solution

1. Step 1: Write the proportion equation
   30,983.31 : 42,756.88 = 16,836.16 : x
2. Step 2: Convert to fraction form
   30,983.31/42,756.88 = 16,836.16/x
3. Step 3: Cross multiply
   30,983.31x = 42,756.88 × 16,836.16
4. Step 4: Simplify right side
   30,983.31x = 719,861,672.78
5. Step 5: Solve for x
   x = 719,861,672.78/30,983.31
6. Step 6: Final answer
   x = 23,233.85