Finding the Fourth Proportional to 49,724.58, 68,621.55 and 28,507.86

Step by Step Solution

1. Step 1: Write the proportion equation
   49,724.58 : 68,621.55 = 28,507.86 : x
2. Step 2: Convert to fraction form
   49,724.58/68,621.55 = 28,507.86/x
3. Step 3: Cross multiply
   49,724.58x = 68,621.55 × 28,507.86
4. Step 4: Simplify right side
   49,724.58x = 1,956,253,540.38
5. Step 5: Solve for x
   x = 1,956,253,540.38/49,724.58
6. Step 6: Final answer
   x = 39,341.78