Finding the Fourth Proportional to 31,030.49, 42,797.16 and 20,274.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,030.49 : 42,797.16 = 20,274.50 : x
2. Step 2: Convert to fraction form
   31,030.49/42,797.16 = 20,274.50/x
3. Step 3: Cross multiply
   31,030.49x = 42,797.16 × 20,274.50
4. Step 4: Simplify right side
   31,030.49x = 867,691,127.41
5. Step 5: Solve for x
   x = 867,691,127.41/31,030.49
6. Step 6: Final answer
   x = 27,962.53