Finding the Fourth Proportional to 40,603.67, 60,890.34 and 13,942.09

Step by Step Solution

1. Step 1: Write the proportion equation
   40,603.67 : 60,890.34 = 13,942.09 : x
2. Step 2: Convert to fraction form
   40,603.67/60,890.34 = 13,942.09/x
3. Step 3: Cross multiply
   40,603.67x = 60,890.34 × 13,942.09
4. Step 4: Simplify right side
   40,603.67x = 848,938,600.41
5. Step 5: Solve for x
   x = 848,938,600.41/40,603.67
6. Step 6: Final answer
   x = 20,907.93