Finding the Fourth Proportional to 47,513.55, 65,550.05 and 30,515.43

Step by Step Solution

1. Step 1: Write the proportion equation
   47,513.55 : 65,550.05 = 30,515.43 : x
2. Step 2: Convert to fraction form
   47,513.55/65,550.05 = 30,515.43/x
3. Step 3: Cross multiply
   47,513.55x = 65,550.05 × 30,515.43
4. Step 4: Simplify right side
   47,513.55x = 2,000,288,127.03
5. Step 5: Solve for x
   x = 2,000,288,127.03/47,513.55
6. Step 6: Final answer
   x = 42,099.32