Finding the Fourth Proportional to 31,654.94, 43,671.56 and 20,321.42

Step by Step Solution

1. Step 1: Write the proportion equation
   31,654.94 : 43,671.56 = 20,321.42 : x
2. Step 2: Convert to fraction form
   31,654.94/43,671.56 = 20,321.42/x
3. Step 3: Cross multiply
   31,654.94x = 43,671.56 × 20,321.42
4. Step 4: Simplify right side
   31,654.94x = 887,468,112.82
5. Step 5: Solve for x
   x = 887,468,112.82/31,654.94
6. Step 6: Final answer
   x = 28,035.69