Finding the Fourth Proportional to 57,730.88, 79,362.81 and 49,634.72

Step by Step Solution

1. Step 1: Write the proportion equation
   57,730.88 : 79,362.81 = 49,634.72 : x
2. Step 2: Convert to fraction form
   57,730.88/79,362.81 = 49,634.72/x
3. Step 3: Cross multiply
   57,730.88x = 79,362.81 × 49,634.72
4. Step 4: Simplify right side
   57,730.88x = 3,939,150,604.59
5. Step 5: Solve for x
   x = 3,939,150,604.59/57,730.88
6. Step 6: Final answer
   x = 68,232.99