Finding the Fourth Proportional to 31,229.58, 43,084.71 and 19,897.05

Step by Step Solution

1. Step 1: Write the proportion equation
   31,229.58 : 43,084.71 = 19,897.05 : x
2. Step 2: Convert to fraction form
   31,229.58/43,084.71 = 19,897.05/x
3. Step 3: Cross multiply
   31,229.58x = 43,084.71 × 19,897.05
4. Step 4: Simplify right side
   31,229.58x = 857,258,629.11
5. Step 5: Solve for x
   x = 857,258,629.11/31,229.58
6. Step 6: Final answer
   x = 27,450.21