Finding the Fourth Proportional to 49,839.40, 68,775.78 and 30,976.12

Step by Step Solution

1. Step 1: Write the proportion equation
   49,839.40 : 68,775.78 = 30,976.12 : x
2. Step 2: Convert to fraction form
   49,839.40/68,775.78 = 30,976.12/x
3. Step 3: Cross multiply
   49,839.40x = 68,775.78 × 30,976.12
4. Step 4: Simplify right side
   49,839.40x = 2,130,406,814.37
5. Step 5: Solve for x
   x = 2,130,406,814.37/49,839.40
6. Step 6: Final answer
   x = 42,745.43