Finding the Fourth Proportional to 31,036.96, 42,845.52 and 19,865.44

Step by Step Solution

1. Step 1: Write the proportion equation
   31,036.96 : 42,845.52 = 19,865.44 : x
2. Step 2: Convert to fraction form
   31,036.96/42,845.52 = 19,865.44/x
3. Step 3: Cross multiply
   31,036.96x = 42,845.52 × 19,865.44
4. Step 4: Simplify right side
   31,036.96x = 851,145,106.83
5. Step 5: Solve for x
   x = 851,145,106.83/31,036.96
6. Step 6: Final answer
   x = 27,423.60