Finding the Fourth Proportional to 139,303, 192,238.14 and 79,687

Step by Step Solution

1. Step 1: Write the proportion equation
   139,303 : 192,238.14 = 79,687 : x
2. Step 2: Convert to fraction form
   139,303/192,238.14 = 79,687/x
3. Step 3: Cross multiply
   139,303x = 192,238.14 × 79,687
4. Step 4: Simplify right side
   139,303x = 15,318,880,662.18
5. Step 5: Solve for x
   x = 15,318,880,662.18/139,303
6. Step 6: Final answer
   x = 109,968.06