Finding the Fourth Proportional to 92,967.40, 139,436.42 and 40,362.76

Step by Step Solution

1. Step 1: Write the proportion equation
   92,967.40 : 139,436.42 = 40,362.76 : x
2. Step 2: Convert to fraction form
   92,967.40/139,436.42 = 40,362.76/x
3. Step 3: Cross multiply
   92,967.40x = 139,436.42 × 40,362.76
4. Step 4: Simplify right side
   92,967.40x = 5,628,038,755.72
5. Step 5: Solve for x
   x = 5,628,038,755.72/92,967.40
6. Step 6: Final answer
   x = 60,537.77