Finding the Fourth Proportional to 31,264.72, 43,136.76 and 20,093.20

Step by Step Solution

1. Step 1: Write the proportion equation
   31,264.72 : 43,136.76 = 20,093.20 : x
2. Step 2: Convert to fraction form
   31,264.72/43,136.76 = 20,093.20/x
3. Step 3: Cross multiply
   31,264.72x = 43,136.76 × 20,093.20
4. Step 4: Simplify right side
   31,264.72x = 866,755,546.03
5. Step 5: Solve for x
   x = 866,755,546.03/31,264.72
6. Step 6: Final answer
   x = 27,723.12