Finding the Fourth Proportional to 51,018.72, 70,395.03 and 30,871.68

Step by Step Solution

1. Step 1: Write the proportion equation
   51,018.72 : 70,395.03 = 30,871.68 : x
2. Step 2: Convert to fraction form
   51,018.72/70,395.03 = 30,871.68/x
3. Step 3: Cross multiply
   51,018.72x = 70,395.03 × 30,871.68
4. Step 4: Simplify right side
   51,018.72x = 2,173,212,839.75
5. Step 5: Solve for x
   x = 2,173,212,839.75/51,018.72
6. Step 6: Final answer
   x = 42,596.38