Finding the Fourth Proportional to 139,811.53, 192,948.69 and 79,359.16

Step by Step Solution

1. Step 1: Write the proportion equation
   139,811.53 : 192,948.69 = 79,359.16 : x
2. Step 2: Convert to fraction form
   139,811.53/192,948.69 = 79,359.16/x
3. Step 3: Cross multiply
   139,811.53x = 192,948.69 × 79,359.16
4. Step 4: Simplify right side
   139,811.53x = 15,312,245,961.50
5. Step 5: Solve for x
   x = 15,312,245,961.50/139,811.53
6. Step 6: Final answer
   x = 109,520.62