Finding the Fourth Proportional to 64,561.36, 89,090.56 and 35,879.24

Step by Step Solution

1. Step 1: Write the proportion equation
   64,561.36 : 89,090.56 = 35,879.24 : x
2. Step 2: Convert to fraction form
   64,561.36/89,090.56 = 35,879.24/x
3. Step 3: Cross multiply
   64,561.36x = 89,090.56 × 35,879.24
4. Step 4: Simplify right side
   64,561.36x = 3,196,501,583.97
5. Step 5: Solve for x
   x = 3,196,501,583.97/64,561.36
6. Step 6: Final answer
   x = 49,511.06