Finding the Fourth Proportional to 139,062.92, 208,614.38 and 43,007.63

Step by Step Solution

1. Step 1: Write the proportion equation
   139,062.92 : 208,614.38 = 43,007.63 : x
2. Step 2: Convert to fraction form
   139,062.92/208,614.38 = 43,007.63/x
3. Step 3: Cross multiply
   139,062.92x = 208,614.38 × 43,007.63
4. Step 4: Simplify right side
   139,062.92x = 8,972,008,809.61
5. Step 5: Solve for x
   x = 8,972,008,809.61/139,062.92
6. Step 6: Final answer
   x = 64,517.62