Finding the Fourth Proportional to 140,832, 194,348.16 and 81,216

Step by Step Solution

1. Step 1: Write the proportion equation
   140,832 : 194,348.16 = 81,216 : x
2. Step 2: Convert to fraction form
   140,832/194,348.16 = 81,216/x
3. Step 3: Cross multiply
   140,832x = 194,348.16 × 81,216
4. Step 4: Simplify right side
   140,832x = 15,784,180,162.56
5. Step 5: Solve for x
   x = 15,784,180,162.56/140,832
6. Step 6: Final answer
   x = 112,078.08