Finding the Fourth Proportional to 31,254.88, 43,145.59 and 19,939.22

Step by Step Solution

1. Step 1: Write the proportion equation
   31,254.88 : 43,145.59 = 19,939.22 : x
2. Step 2: Convert to fraction form
   31,254.88/43,145.59 = 19,939.22/x
3. Step 3: Cross multiply
   31,254.88x = 43,145.59 × 19,939.22
4. Step 4: Simplify right side
   31,254.88x = 860,289,411.04
5. Step 5: Solve for x
   x = 860,289,411.04/31,254.88
6. Step 6: Final answer
   x = 27,524.96