Finding the Fourth Proportional to 31,266.72, 43,139.52 and 20,095.20

Step by Step Solution

1. Step 1: Write the proportion equation
   31,266.72 : 43,139.52 = 20,095.20 : x
2. Step 2: Convert to fraction form
   31,266.72/43,139.52 = 20,095.20/x
3. Step 3: Cross multiply
   31,266.72x = 43,139.52 × 20,095.20
4. Step 4: Simplify right side
   31,266.72x = 866,897,282.30
5. Step 5: Solve for x
   x = 866,897,282.30/31,266.72
6. Step 6: Final answer
   x = 27,725.88