Finding the Fourth Proportional to 72,405.42, 108,591.72 and 25,658.28

Step by Step Solution

1. Step 1: Write the proportion equation
   72,405.42 : 108,591.72 = 25,658.28 : x
2. Step 2: Convert to fraction form
   72,405.42/108,591.72 = 25,658.28/x
3. Step 3: Cross multiply
   72,405.42x = 108,591.72 × 25,658.28
4. Step 4: Simplify right side
   72,405.42x = 2,786,276,757.44
5. Step 5: Solve for x
   x = 2,786,276,757.44/72,405.42
6. Step 6: Final answer
   x = 38,481.60