Finding the Fourth Proportional to 31,563.61, 43,573.55 and 19,630.79

Step by Step Solution

1. Step 1: Write the proportion equation
   31,563.61 : 43,573.55 = 19,630.79 : x
2. Step 2: Convert to fraction form
   31,563.61/43,573.55 = 19,630.79/x
3. Step 3: Cross multiply
   31,563.61x = 43,573.55 × 19,630.79
4. Step 4: Simplify right side
   31,563.61x = 855,383,111.45
5. Step 5: Solve for x
   x = 855,383,111.45/31,563.61
6. Step 6: Final answer
   x = 27,100.30