Finding the Fourth Proportional to 50,907.40, 76,342.78 and 17,618.42

Step by Step Solution

1. Step 1: Write the proportion equation
   50,907.40 : 76,342.78 = 17,618.42 : x
2. Step 2: Convert to fraction form
   50,907.40/76,342.78 = 17,618.42/x
3. Step 3: Cross multiply
   50,907.40x = 76,342.78 × 17,618.42
4. Step 4: Simplify right side
   50,907.40x = 1,345,039,162.01
5. Step 5: Solve for x
   x = 1,345,039,162.01/50,907.40
6. Step 6: Final answer
   x = 26,421.29