Finding the Fourth Proportional to 49,149.14, 67,823.24 and 30,978.81

Step by Step Solution

1. Step 1: Write the proportion equation
   49,149.14 : 67,823.24 = 30,978.81 : x
2. Step 2: Convert to fraction form
   49,149.14/67,823.24 = 30,978.81/x
3. Step 3: Cross multiply
   49,149.14x = 67,823.24 × 30,978.81
4. Step 4: Simplify right side
   49,149.14x = 2,101,083,110.65
5. Step 5: Solve for x
   x = 2,101,083,110.65/49,149.14
6. Step 6: Final answer
   x = 42,749.14