Finding the Fourth Proportional to 91,960.81, 137,938.45 and 25,404.92

Step by Step Solution

1. Step 1: Write the proportion equation
   91,960.81 : 137,938.45 = 25,404.92 : x
2. Step 2: Convert to fraction form
   91,960.81/137,938.45 = 25,404.92/x
3. Step 3: Cross multiply
   91,960.81x = 137,938.45 × 25,404.92
4. Step 4: Simplify right side
   91,960.81x = 3,504,315,287.17
5. Step 5: Solve for x
   x = 3,504,315,287.17/91,960.81
6. Step 6: Final answer
   x = 38,106.62