Finding the Fourth Proportional to 139,369, 192,332.72 and 75,706.80

Step by Step Solution

1. Step 1: Write the proportion equation
   139,369 : 192,332.72 = 75,706.80 : x
2. Step 2: Convert to fraction form
   139,369/192,332.72 = 75,706.80/x
3. Step 3: Cross multiply
   139,369x = 192,332.72 × 75,706.80
4. Step 4: Simplify right side
   139,369x = 14,560,894,766.50
5. Step 5: Solve for x
   x = 14,560,894,766.50/139,369
6. Step 6: Final answer
   x = 104,477.29