Finding the Fourth Proportional to 49,776.12, 68,688.54 and 30,912.84

Step by Step Solution

1. Step 1: Write the proportion equation
   49,776.12 : 68,688.54 = 30,912.84 : x
2. Step 2: Convert to fraction form
   49,776.12/68,688.54 = 30,912.84/x
3. Step 3: Cross multiply
   49,776.12x = 68,688.54 × 30,912.84
4. Step 4: Simplify right side
   49,776.12x = 2,123,357,846.85
5. Step 5: Solve for x
   x = 2,123,357,846.85/49,776.12
6. Step 6: Final answer
   x = 42,658.16