Finding the Fourth Proportional to 139,613.81, 209,351.52 and 49,643.02

Step by Step Solution

1. Step 1: Write the proportion equation
   139,613.81 : 209,351.52 = 49,643.02 : x
2. Step 2: Convert to fraction form
   139,613.81/209,351.52 = 49,643.02/x
3. Step 3: Cross multiply
   139,613.81x = 209,351.52 × 49,643.02
4. Step 4: Simplify right side
   139,613.81x = 10,392,841,694.39
5. Step 5: Solve for x
   x = 10,392,841,694.39/139,613.81
6. Step 6: Final answer
   x = 74,439.93