Finding the Fourth Proportional to 31,073.72, 42,884.72 and 19,144.04

Step by Step Solution

1. Step 1: Write the proportion equation
   31,073.72 : 42,884.72 = 19,144.04 : x
2. Step 2: Convert to fraction form
   31,073.72/42,884.72 = 19,144.04/x
3. Step 3: Cross multiply
   31,073.72x = 42,884.72 × 19,144.04
4. Step 4: Simplify right side
   31,073.72x = 820,986,484.93
5. Step 5: Solve for x
   x = 820,986,484.93/31,073.72
6. Step 6: Final answer
   x = 26,420.61