Finding the Fourth Proportional to 91,941.46, 137,920.12 and 25,381.60

Step by Step Solution

1. Step 1: Write the proportion equation
   91,941.46 : 137,920.12 = 25,381.60 : x
2. Step 2: Convert to fraction form
   91,941.46/137,920.12 = 25,381.60/x
3. Step 3: Cross multiply
   91,941.46x = 137,920.12 × 25,381.60
4. Step 4: Simplify right side
   91,941.46x = 3,500,632,909.54
5. Step 5: Solve for x
   x = 3,500,632,909.54/91,941.46
6. Step 6: Final answer
   x = 38,074.59