Finding the Fourth Proportional to 139,596.16, 192,641.76 and 79,178.56

Step by Step Solution

1. Step 1: Write the proportion equation
   139,596.16 : 192,641.76 = 79,178.56 : x
2. Step 2: Convert to fraction form
   139,596.16/192,641.76 = 79,178.56/x
3. Step 3: Cross multiply
   139,596.16x = 192,641.76 × 79,178.56
4. Step 4: Simplify right side
   139,596.16x = 15,253,097,152.67
5. Step 5: Solve for x
   x = 15,253,097,152.67/139,596.16
6. Step 6: Final answer
   x = 109,265.88