Finding the Fourth Proportional to 50,418.48, 69,558.84 and 50,340.72

Step by Step Solution

1. Step 1: Write the proportion equation
   50,418.48 : 69,558.84 = 50,340.72 : x
2. Step 2: Convert to fraction form
   50,418.48/69,558.84 = 50,340.72/x
3. Step 3: Cross multiply
   50,418.48x = 69,558.84 × 50,340.72
4. Step 4: Simplify right side
   50,418.48x = 3,501,642,087.96
5. Step 5: Solve for x
   x = 3,501,642,087.96/50,418.48
6. Step 6: Final answer
   x = 69,451.56