Finding the Fourth Proportional to 139,401.58, 192,377.92 and 75,743.68

Step by Step Solution

1. Step 1: Write the proportion equation
   139,401.58 : 192,377.92 = 75,743.68 : x
2. Step 2: Convert to fraction form
   139,401.58/192,377.92 = 75,743.68/x
3. Step 3: Cross multiply
   139,401.58x = 192,377.92 × 75,743.68
4. Step 4: Simplify right side
   139,401.58x = 14,571,411,611.55
5. Step 5: Solve for x
   x = 14,571,411,611.55/139,401.58
6. Step 6: Final answer
   x = 104,528.31