Finding the Fourth Proportional to 39,929.47, 55,105.40 and 23,162.47

Step by Step Solution

1. Step 1: Write the proportion equation
   39,929.47 : 55,105.40 = 23,162.47 : x
2. Step 2: Convert to fraction form
   39,929.47/55,105.40 = 23,162.47/x
3. Step 3: Cross multiply
   39,929.47x = 55,105.40 × 23,162.47
4. Step 4: Simplify right side
   39,929.47x = 1,276,377,174.34
5. Step 5: Solve for x
   x = 1,276,377,174.34/39,929.47
6. Step 6: Final answer
   x = 31,965.79