Finding the Fourth Proportional to 41,128.65, 57,696.75 and 41,128.65

Step by Step Solution

1. Step 1: Write the proportion equation
   41,128.65 : 57,696.75 = 41,128.65 : x
2. Step 2: Convert to fraction form
   41,128.65/57,696.75 = 41,128.65/x
3. Step 3: Cross multiply
   41,128.65x = 57,696.75 × 41,128.65
4. Step 4: Simplify right side
   41,128.65x = 2,372,989,436.89
5. Step 5: Solve for x
   x = 2,372,989,436.89/41,128.65
6. Step 6: Final answer
   x = 57,696.75