Finding the Fourth Proportional to 31,073.28, 42,591.92 and 30,635.84

Step by Step Solution

1. Step 1: Write the proportion equation
   31,073.28 : 42,591.92 = 30,635.84 : x
2. Step 2: Convert to fraction form
   31,073.28/42,591.92 = 30,635.84/x
3. Step 3: Cross multiply
   31,073.28x = 42,591.92 × 30,635.84
4. Step 4: Simplify right side
   31,073.28x = 1,304,839,246.41
5. Step 5: Solve for x
   x = 1,304,839,246.41/31,073.28
6. Step 6: Final answer
   x = 41,992.32