Finding the Fourth Proportional to 140,641.31, 194,086.83 and 76,977.74

Step by Step Solution

1. Step 1: Write the proportion equation
   140,641.31 : 194,086.83 = 76,977.74 : x
2. Step 2: Convert to fraction form
   140,641.31/194,086.83 = 76,977.74/x
3. Step 3: Cross multiply
   140,641.31x = 194,086.83 × 76,977.74
4. Step 4: Simplify right side
   140,641.31x = 14,940,366,311.05
5. Step 5: Solve for x
   x = 14,940,366,311.05/140,641.31
6. Step 6: Final answer
   x = 106,230.28