Finding the Fourth Proportional to 41,688.42, 57,580.52 and 30,339.92

Step by Step Solution

1. Step 1: Write the proportion equation
   41,688.42 : 57,580.52 = 30,339.92 : x
2. Step 2: Convert to fraction form
   41,688.42/57,580.52 = 30,339.92/x
3. Step 3: Cross multiply
   41,688.42x = 57,580.52 × 30,339.92
4. Step 4: Simplify right side
   41,688.42x = 1,746,987,930.76
5. Step 5: Solve for x
   x = 1,746,987,930.76/41,688.42
6. Step 6: Final answer
   x = 41,905.83