Finding the Fourth Proportional to 64,940.88, 89,608.50 and 41,100.15

Step by Step Solution

1. Step 1: Write the proportion equation
   64,940.88 : 89,608.50 = 41,100.15 : x
2. Step 2: Convert to fraction form
   64,940.88/89,608.50 = 41,100.15/x
3. Step 3: Cross multiply
   64,940.88x = 89,608.50 × 41,100.15
4. Step 4: Simplify right side
   64,940.88x = 3,682,922,791.28
5. Step 5: Solve for x
   x = 3,682,922,791.28/64,940.88
6. Step 6: Final answer
   x = 56,711.93