Finding the Fourth Proportional to 139,362.83, 192,324.26 and 78,932.57

Step by Step Solution

1. Step 1: Write the proportion equation
   139,362.83 : 192,324.26 = 78,932.57 : x
2. Step 2: Convert to fraction form
   139,362.83/192,324.26 = 78,932.57/x
3. Step 3: Cross multiply
   139,362.83x = 192,324.26 × 78,932.57
4. Step 4: Simplify right side
   139,362.83x = 15,180,646,758.86
5. Step 5: Solve for x
   x = 15,180,646,758.86/139,362.83
6. Step 6: Final answer
   x = 108,928.95