Finding the Fourth Proportional to 41,920, 57,851.20 and 23,056.72

Step by Step Solution

1. Step 1: Write the proportion equation
   41,920 : 57,851.20 = 23,056.72 : x
2. Step 2: Convert to fraction form
   41,920/57,851.20 = 23,056.72/x
3. Step 3: Cross multiply
   41,920x = 57,851.20 × 23,056.72
4. Step 4: Simplify right side
   41,920x = 1,333,858,920.06
5. Step 5: Solve for x
   x = 1,333,858,920.06/41,920
6. Step 6: Final answer
   x = 31,819.15