Finding the Fourth Proportional to 141,520.06, 195,325.59 and 81,131.25

Step by Step Solution

1. Step 1: Write the proportion equation
   141,520.06 : 195,325.59 = 81,131.25 : x
2. Step 2: Convert to fraction form
   141,520.06/195,325.59 = 81,131.25/x
3. Step 3: Cross multiply
   141,520.06x = 195,325.59 × 81,131.25
4. Step 4: Simplify right side
   141,520.06x = 15,847,008,297.06
5. Step 5: Solve for x
   x = 15,847,008,297.06/141,520.06
6. Step 6: Final answer
   x = 111,977.12