Finding the Fourth Proportional to 140,996, 194,591.76 and 81,380

Step by Step Solution

1. Step 1: Write the proportion equation
   140,996 : 194,591.76 = 81,380 : x
2. Step 2: Convert to fraction form
   140,996/194,591.76 = 81,380/x
3. Step 3: Cross multiply
   140,996x = 194,591.76 × 81,380
4. Step 4: Simplify right side
   140,996x = 15,835,877,428.80
5. Step 5: Solve for x
   x = 15,835,877,428.80/140,996
6. Step 6: Final answer
   x = 112,314.37