Finding the Fourth Proportional to 140,835, 194,352.30 and 81,219

Step by Step Solution

1. Step 1: Write the proportion equation
   140,835 : 194,352.30 = 81,219 : x
2. Step 2: Convert to fraction form
   140,835/194,352.30 = 81,219/x
3. Step 3: Cross multiply
   140,835x = 194,352.30 × 81,219
4. Step 4: Simplify right side
   140,835x = 15,785,099,453.70
5. Step 5: Solve for x
   x = 15,785,099,453.70/140,835
6. Step 6: Final answer
   x = 112,082.22