Finding the Fourth Proportional to 92,774.20, 139,035.42 and 42,744.28

Step by Step Solution

1. Step 1: Write the proportion equation
   92,774.20 : 139,035.42 = 42,744.28 : x
2. Step 2: Convert to fraction form
   92,774.20/139,035.42 = 42,744.28/x
3. Step 3: Cross multiply
   92,774.20x = 139,035.42 × 42,744.28
4. Step 4: Simplify right side
   92,774.20x = 5,942,968,922.40
5. Step 5: Solve for x
   x = 5,942,968,922.40/92,774.20
6. Step 6: Final answer
   x = 64,058.42