Finding the Fourth Proportional to 41,139.48, 56,717.60 and 30,887.12

Step by Step Solution

1. Step 1: Write the proportion equation
   41,139.48 : 56,717.60 = 30,887.12 : x
2. Step 2: Convert to fraction form
   41,139.48/56,717.60 = 30,887.12/x
3. Step 3: Cross multiply
   41,139.48x = 56,717.60 × 30,887.12
4. Step 4: Simplify right side
   41,139.48x = 1,751,843,317.31
5. Step 5: Solve for x
   x = 1,751,843,317.31/41,139.48
6. Step 6: Final answer
   x = 42,583.02