Finding the Fourth Proportional to 139,234.92, 192,134.52 and 78,804.06

Step by Step Solution

1. Step 1: Write the proportion equation
   139,234.92 : 192,134.52 = 78,804.06 : x
2. Step 2: Convert to fraction form
   139,234.92/192,134.52 = 78,804.06/x
3. Step 3: Cross multiply
   139,234.92x = 192,134.52 × 78,804.06
4. Step 4: Simplify right side
   139,234.92x = 15,140,980,242.15
5. Step 5: Solve for x
   x = 15,140,980,242.15/139,234.92
6. Step 6: Final answer
   x = 108,744.13