Finding the Fourth Proportional to 51,003.62, 70,381.56 and 30,871.68

Step by Step Solution

1. Step 1: Write the proportion equation
   51,003.62 : 70,381.56 = 30,871.68 : x
2. Step 2: Convert to fraction form
   51,003.62/70,381.56 = 30,871.68/x
3. Step 3: Cross multiply
   51,003.62x = 70,381.56 × 30,871.68
4. Step 4: Simplify right side
   51,003.62x = 2,172,796,998.22
5. Step 5: Solve for x
   x = 2,172,796,998.22/51,003.62
6. Step 6: Final answer
   x = 42,600.84