Finding the Fourth Proportional to 139,479.57, 192,485.16 and 79,056.41

Step by Step Solution

1. Step 1: Write the proportion equation
   139,479.57 : 192,485.16 = 79,056.41 : x
2. Step 2: Convert to fraction form
   139,479.57/192,485.16 = 79,056.41/x
3. Step 3: Cross multiply
   139,479.57x = 192,485.16 × 79,056.41
4. Step 4: Simplify right side
   139,479.57x = 15,217,184,765.45
5. Step 5: Solve for x
   x = 15,217,184,765.45/139,479.57
6. Step 6: Final answer
   x = 109,099.74