Finding the Fourth Proportional to 139,049.44, 191,843.12 and 78,614.24

Step by Step Solution

1. Step 1: Write the proportion equation
   139,049.44 : 191,843.12 = 78,614.24 : x
2. Step 2: Convert to fraction form
   139,049.44/191,843.12 = 78,614.24/x
3. Step 3: Cross multiply
   139,049.44x = 191,843.12 × 78,614.24
4. Step 4: Simplify right side
   139,049.44x = 15,081,601,078.03
5. Step 5: Solve for x
   x = 15,081,601,078.03/139,049.44
6. Step 6: Final answer
   x = 108,462.15