Finding the Fourth Proportional to 140,835.50, 194,353 and 81,219.50

Step by Step Solution

1. Step 1: Write the proportion equation
   140,835.50 : 194,353 = 81,219.50 : x
2. Step 2: Convert to fraction form
   140,835.50/194,353 = 81,219.50/x
3. Step 3: Cross multiply
   140,835.50x = 194,353 × 81,219.50
4. Step 4: Simplify right side
   140,835.50x = 15,785,253,483.50
5. Step 5: Solve for x
   x = 15,785,253,483.50/140,835.50
6. Step 6: Final answer
   x = 112,082.92