Finding the Fourth Proportional to 140,949.48, 194,509.71 and 77,291.31

Step by Step Solution

1. Step 1: Write the proportion equation
   140,949.48 : 194,509.71 = 77,291.31 : x
2. Step 2: Convert to fraction form
   140,949.48/194,509.71 = 77,291.31/x
3. Step 3: Cross multiply
   140,949.48x = 194,509.71 × 77,291.31
4. Step 4: Simplify right side
   140,949.48x = 15,033,910,293.62
5. Step 5: Solve for x
   x = 15,033,910,293.62/140,949.48
6. Step 6: Final answer
   x = 106,661.69