Finding the Fourth Proportional to 141,868.53, 195,781.05 and 81,445.50

Step by Step Solution

1. Step 1: Write the proportion equation
   141,868.53 : 195,781.05 = 81,445.50 : x
2. Step 2: Convert to fraction form
   141,868.53/195,781.05 = 81,445.50/x
3. Step 3: Cross multiply
   141,868.53x = 195,781.05 × 81,445.50
4. Step 4: Simplify right side
   141,868.53x = 15,945,485,507.78
5. Step 5: Solve for x
   x = 15,945,485,507.78/141,868.53
6. Step 6: Final answer
   x = 112,396.21