Finding the Fourth Proportional to 141,880.77, 195,785.98 and 81,443.02

Step by Step Solution

1. Step 1: Write the proportion equation
   141,880.77 : 195,785.98 = 81,443.02 : x
2. Step 2: Convert to fraction form
   141,880.77/195,785.98 = 81,443.02/x
3. Step 3: Cross multiply
   141,880.77x = 195,785.98 × 81,443.02
4. Step 4: Simplify right side
   141,880.77x = 15,945,401,938.59
5. Step 5: Solve for x
   x = 15,945,401,938.59/141,880.77
6. Step 6: Final answer
   x = 112,385.93