Finding the Fourth Proportional to 92,938.50, 139,329.37 and 40,308.34

Step by Step Solution

1. Step 1: Write the proportion equation
   92,938.50 : 139,329.37 = 40,308.34 : x
2. Step 2: Convert to fraction form
   92,938.50/139,329.37 = 40,308.34/x
3. Step 3: Cross multiply
   92,938.50x = 139,329.37 × 40,308.34
4. Step 4: Simplify right side
   92,938.50x = 5,616,135,416.40
5. Step 5: Solve for x
   x = 5,616,135,416.40/92,938.50
6. Step 6: Final answer
   x = 60,428.52