Finding the Fourth Proportional to 31,014.28, 42,800.16 and 19,070.56

Step by Step Solution

1. Step 1: Write the proportion equation
   31,014.28 : 42,800.16 = 19,070.56 : x
2. Step 2: Convert to fraction form
   31,014.28/42,800.16 = 19,070.56/x
3. Step 3: Cross multiply
   31,014.28x = 42,800.16 × 19,070.56
4. Step 4: Simplify right side
   31,014.28x = 816,223,019.29
5. Step 5: Solve for x
   x = 816,223,019.29/31,014.28
6. Step 6: Final answer
   x = 26,317.65