Finding the Fourth Proportional to 52,789.72, 72,847.92 and 30,129.88

Step by Step Solution

1. Step 1: Write the proportion equation
   52,789.72 : 72,847.92 = 30,129.88 : x
2. Step 2: Convert to fraction form
   52,789.72/72,847.92 = 30,129.88/x
3. Step 3: Cross multiply
   52,789.72x = 72,847.92 × 30,129.88
4. Step 4: Simplify right side
   52,789.72x = 2,194,899,087.85
5. Step 5: Solve for x
   x = 2,194,899,087.85/52,789.72
6. Step 6: Final answer
   x = 41,578.15