Finding the Fourth Proportional to 139,300, 192,234 and 79,684

Step by Step Solution

1. Step 1: Write the proportion equation
   139,300 : 192,234 = 79,684 : x
2. Step 2: Convert to fraction form
   139,300/192,234 = 79,684/x
3. Step 3: Cross multiply
   139,300x = 192,234 × 79,684
4. Step 4: Simplify right side
   139,300x = 15,317,974,056
5. Step 5: Solve for x
   x = 15,317,974,056/139,300
6. Step 6: Final answer
   x = 109,963.92