Finding the Fourth Proportional to 139,930.72, 209,834.32 and 40,068.24

Step by Step Solution

1. Step 1: Write the proportion equation
   139,930.72 : 209,834.32 = 40,068.24 : x
2. Step 2: Convert to fraction form
   139,930.72/209,834.32 = 40,068.24/x
3. Step 3: Cross multiply
   139,930.72x = 209,834.32 × 40,068.24
4. Step 4: Simplify right side
   139,930.72x = 8,407,691,894.00
5. Step 5: Solve for x
   x = 8,407,691,894.00/139,930.72
6. Step 6: Final answer
   x = 60,084.68