Finding the Fourth Proportional to 140,978.29, 194,550.06 and 77,317.42

Step by Step Solution

1. Step 1: Write the proportion equation
   140,978.29 : 194,550.06 = 77,317.42 : x
2. Step 2: Convert to fraction form
   140,978.29/194,550.06 = 77,317.42/x
3. Step 3: Cross multiply
   140,978.29x = 194,550.06 × 77,317.42
4. Step 4: Simplify right side
   140,978.29x = 15,042,108,700.05
5. Step 5: Solve for x
   x = 15,042,108,700.05/140,978.29
6. Step 6: Final answer
   x = 106,698.05