Finding the Fourth Proportional to 49,776.57, 68,642.78 and 42,243.57

Step by Step Solution

1. Step 1: Write the proportion equation
   49,776.57 : 68,642.78 = 42,243.57 : x
2. Step 2: Convert to fraction form
   49,776.57/68,642.78 = 42,243.57/x
3. Step 3: Cross multiply
   49,776.57x = 68,642.78 × 42,243.57
4. Step 4: Simplify right side
   49,776.57x = 2,899,715,870.71
5. Step 5: Solve for x
   x = 2,899,715,870.71/49,776.57
6. Step 6: Final answer
   x = 58,254.63