Finding the Fourth Proportional to 47,616.72, 65,721.96 and 30,820.56

Step by Step Solution

1. Step 1: Write the proportion equation
   47,616.72 : 65,721.96 = 30,820.56 : x
2. Step 2: Convert to fraction form
   47,616.72/65,721.96 = 30,820.56/x
3. Step 3: Cross multiply
   47,616.72x = 65,721.96 × 30,820.56
4. Step 4: Simplify right side
   47,616.72x = 2,025,587,611.50
5. Step 5: Solve for x
   x = 2,025,587,611.50/47,616.72
6. Step 6: Final answer
   x = 42,539.42