Finding the Fourth Proportional to 39,969.72, 55,139.94 and 23,193

Step by Step Solution

1. Step 1: Write the proportion equation
   39,969.72 : 55,139.94 = 23,193 : x
2. Step 2: Convert to fraction form
   39,969.72/55,139.94 = 23,193/x
3. Step 3: Cross multiply
   39,969.72x = 55,139.94 × 23,193
4. Step 4: Simplify right side
   39,969.72x = 1,278,860,628.42
5. Step 5: Solve for x
   x = 1,278,860,628.42/39,969.72
6. Step 6: Final answer
   x = 31,995.74