Finding the Fourth Proportional to 141,516.78, 195,191.12 and 81,065.37

Step by Step Solution

1. Step 1: Write the proportion equation
   141,516.78 : 195,191.12 = 81,065.37 : x
2. Step 2: Convert to fraction form
   141,516.78/195,191.12 = 81,065.37/x
3. Step 3: Cross multiply
   141,516.78x = 195,191.12 × 81,065.37
4. Step 4: Simplify right side
   141,516.78x = 15,823,240,018.69
5. Step 5: Solve for x
   x = 15,823,240,018.69/141,516.78
6. Step 6: Final answer
   x = 111,811.76