Finding the Fourth Proportional to 139,367.18, 192,327.71 and 75,705

Step by Step Solution

1. Step 1: Write the proportion equation
   139,367.18 : 192,327.71 = 75,705 : x
2. Step 2: Convert to fraction form
   139,367.18/192,327.71 = 75,705/x
3. Step 3: Cross multiply
   139,367.18x = 192,327.71 × 75,705
4. Step 4: Simplify right side
   139,367.18x = 14,560,168,907.03
5. Step 5: Solve for x
   x = 14,560,168,907.03/139,367.18
6. Step 6: Final answer
   x = 104,473.45