Finding the Fourth Proportional to 91,760.50, 137,640.49 and 25,200.69

Step by Step Solution

1. Step 1: Write the proportion equation
   91,760.50 : 137,640.49 = 25,200.69 : x
2. Step 2: Convert to fraction form
   91,760.50/137,640.49 = 25,200.69/x
3. Step 3: Cross multiply
   91,760.50x = 137,640.49 × 25,200.69
4. Step 4: Simplify right side
   91,760.50x = 3,468,635,515.01
5. Step 5: Solve for x
   x = 3,468,635,515.01/91,760.50
6. Step 6: Final answer
   x = 37,800.97