Finding the Fourth Proportional to 31,100.27, 42,919.25 and 19,002.72

Step by Step Solution

1. Step 1: Write the proportion equation
   31,100.27 : 42,919.25 = 19,002.72 : x
2. Step 2: Convert to fraction form
   31,100.27/42,919.25 = 19,002.72/x
3. Step 3: Cross multiply
   31,100.27x = 42,919.25 × 19,002.72
4. Step 4: Simplify right side
   31,100.27x = 815,582,395.35
5. Step 5: Solve for x
   x = 815,582,395.35/31,100.27
6. Step 6: Final answer
   x = 26,224.29