Finding the Fourth Proportional to 49,983.72, 68,968.86 and 30,874.20

Step by Step Solution

1. Step 1: Write the proportion equation
   49,983.72 : 68,968.86 = 30,874.20 : x
2. Step 2: Convert to fraction form
   49,983.72/68,968.86 = 30,874.20/x
3. Step 3: Cross multiply
   49,983.72x = 68,968.86 × 30,874.20
4. Step 4: Simplify right side
   49,983.72x = 2,129,358,377.41
5. Step 5: Solve for x
   x = 2,129,358,377.41/49,983.72
6. Step 6: Final answer
   x = 42,601.04