Finding the Fourth Proportional to 47,433.69, 65,428.56 and 30,420.09

Step by Step Solution

1. Step 1: Write the proportion equation
   47,433.69 : 65,428.56 = 30,420.09 : x
2. Step 2: Convert to fraction form
   47,433.69/65,428.56 = 30,420.09/x
3. Step 3: Cross multiply
   47,433.69x = 65,428.56 × 30,420.09
4. Step 4: Simplify right side
   47,433.69x = 1,990,342,683.77
5. Step 5: Solve for x
   x = 1,990,342,683.77/47,433.69
6. Step 6: Final answer
   x = 41,960.53