Finding the Fourth Proportional to 31,373.82, 43,279.83 and 20,031.39

Step by Step Solution

1. Step 1: Write the proportion equation
   31,373.82 : 43,279.83 = 20,031.39 : x
2. Step 2: Convert to fraction form
   31,373.82/43,279.83 = 20,031.39/x
3. Step 3: Cross multiply
   31,373.82x = 43,279.83 × 20,031.39
4. Step 4: Simplify right side
   31,373.82x = 866,955,153.86
5. Step 5: Solve for x
   x = 866,955,153.86/31,373.82
6. Step 6: Final answer
   x = 27,633.08