Finding the Fourth Proportional to 49,278.87, 73,850.13 and 42,688.71

Step by Step Solution

1. Step 1: Write the proportion equation
   49,278.87 : 73,850.13 = 42,688.71 : x
2. Step 2: Convert to fraction form
   49,278.87/73,850.13 = 42,688.71/x
3. Step 3: Cross multiply
   49,278.87x = 73,850.13 × 42,688.71
4. Step 4: Simplify right side
   49,278.87x = 3,152,566,783.03
5. Step 5: Solve for x
   x = 3,152,566,783.03/49,278.87
6. Step 6: Final answer
   x = 63,974.01