Finding the Fourth Proportional to 41,290.80, 56,976.12 and 34,188.72

Step by Step Solution

1. Step 1: Write the proportion equation
   41,290.80 : 56,976.12 = 34,188.72 : x
2. Step 2: Convert to fraction form
   41,290.80/56,976.12 = 34,188.72/x
3. Step 3: Cross multiply
   41,290.80x = 56,976.12 × 34,188.72
4. Step 4: Simplify right side
   41,290.80x = 1,947,940,613.37
5. Step 5: Solve for x
   x = 1,947,940,613.37/41,290.80
6. Step 6: Final answer
   x = 47,176.14