Finding the Fourth Proportional to 52,788.72, 72,846.54 and 30,128.88

Step by Step Solution

1. Step 1: Write the proportion equation
   52,788.72 : 72,846.54 = 30,128.88 : x
2. Step 2: Convert to fraction form
   52,788.72/72,846.54 = 30,128.88/x
3. Step 3: Cross multiply
   52,788.72x = 72,846.54 × 30,128.88
4. Step 4: Simplify right side
   52,788.72x = 2,194,784,662.08
5. Step 5: Solve for x
   x = 2,194,784,662.08/52,788.72
6. Step 6: Final answer
   x = 41,576.77