Finding the Fourth Proportional to 141,597.54, 195,405.30 and 81,171.81

Step by Step Solution

1. Step 1: Write the proportion equation
   141,597.54 : 195,405.30 = 81,171.81 : x
2. Step 2: Convert to fraction form
   141,597.54/195,405.30 = 81,171.81/x
3. Step 3: Cross multiply
   141,597.54x = 195,405.30 × 81,171.81
4. Step 4: Simplify right side
   141,597.54x = 15,861,401,884.59
5. Step 5: Solve for x
   x = 15,861,401,884.59/141,597.54
6. Step 6: Final answer
   x = 112,017.50