Finding the Fourth Proportional to 139,927.43, 209,935.52 and 49,968.18

Step by Step Solution

1. Step 1: Write the proportion equation
   139,927.43 : 209,935.52 = 49,968.18 : x
2. Step 2: Convert to fraction form
   139,927.43/209,935.52 = 49,968.18/x
3. Step 3: Cross multiply
   139,927.43x = 209,935.52 × 49,968.18
4. Step 4: Simplify right side
   139,927.43x = 10,490,095,601.91
5. Step 5: Solve for x
   x = 10,490,095,601.91/139,927.43
6. Step 6: Final answer
   x = 74,968.12