Finding the Fourth Proportional to 31,418.58, 43,367.73 and 20,118.51

Step by Step Solution

1. Step 1: Write the proportion equation
   31,418.58 : 43,367.73 = 20,118.51 : x
2. Step 2: Convert to fraction form
   31,418.58/43,367.73 = 20,118.51/x
3. Step 3: Cross multiply
   31,418.58x = 43,367.73 × 20,118.51
4. Step 4: Simplify right side
   31,418.58x = 872,494,109.68
5. Step 5: Solve for x
   x = 872,494,109.68/31,418.58
6. Step 6: Final answer
   x = 27,770.00