Finding the Fourth Proportional to 76,178.27, 105,057.59 and 49,292.75

Step by Step Solution

1. Step 1: Write the proportion equation
   76,178.27 : 105,057.59 = 49,292.75 : x
2. Step 2: Convert to fraction form
   76,178.27/105,057.59 = 49,292.75/x
3. Step 3: Cross multiply
   76,178.27x = 105,057.59 × 49,292.75
4. Step 4: Simplify right side
   76,178.27x = 5,178,576,747.72
5. Step 5: Solve for x
   x = 5,178,576,747.72/76,178.27
6. Step 6: Final answer
   x = 67,979.72