Finding the Fourth Proportional to 51,152.32, 76,626.42 and 40,640.14

Step by Step Solution

1. Step 1: Write the proportion equation
   51,152.32 : 76,626.42 = 40,640.14 : x
2. Step 2: Convert to fraction form
   51,152.32/76,626.42 = 40,640.14/x
3. Step 3: Cross multiply
   51,152.32x = 76,626.42 × 40,640.14
4. Step 4: Simplify right side
   51,152.32x = 3,114,108,436.50
5. Step 5: Solve for x
   x = 3,114,108,436.50/51,152.32
6. Step 6: Final answer
   x = 60,879.12