Finding the Fourth Proportional to 139,493.42, 192,496.86 and 79,069.62

Step by Step Solution

1. Step 1: Write the proportion equation
   139,493.42 : 192,496.86 = 79,069.62 : x
2. Step 2: Convert to fraction form
   139,493.42/192,496.86 = 79,069.62/x
3. Step 3: Cross multiply
   139,493.42x = 192,496.86 × 79,069.62
4. Step 4: Simplify right side
   139,493.42x = 15,220,653,571.39
5. Step 5: Solve for x
   x = 15,220,653,571.39/139,493.42
6. Step 6: Final answer
   x = 109,113.77