Finding the Fourth Proportional to 67,872.24, 101,618.40 and 51,180.03

Step by Step Solution

1. Step 1: Write the proportion equation
   67,872.24 : 101,618.40 = 51,180.03 : x
2. Step 2: Convert to fraction form
   67,872.24/101,618.40 = 51,180.03/x
3. Step 3: Cross multiply
   67,872.24x = 101,618.40 × 51,180.03
4. Step 4: Simplify right side
   67,872.24x = 5,200,832,760.55
5. Step 5: Solve for x
   x = 5,200,832,760.55/67,872.24
6. Step 6: Final answer
   x = 76,626.80