Finding the Fourth Proportional to 140,688.27, 194,145.39 and 77,022.27

Step by Step Solution

1. Step 1: Write the proportion equation
   140,688.27 : 194,145.39 = 77,022.27 : x
2. Step 2: Convert to fraction form
   140,688.27/194,145.39 = 77,022.27/x
3. Step 3: Cross multiply
   140,688.27x = 194,145.39 × 77,022.27
4. Step 4: Simplify right side
   140,688.27x = 14,953,518,647.84
5. Step 5: Solve for x
   x = 14,953,518,647.84/140,688.27
6. Step 6: Final answer
   x = 106,288.31