Finding the Fourth Proportional to 139,420.30, 192,401.23 and 75,758.10

Step by Step Solution

1. Step 1: Write the proportion equation
   139,420.30 : 192,401.23 = 75,758.10 : x
2. Step 2: Convert to fraction form
   139,420.30/192,401.23 = 75,758.10/x
3. Step 3: Cross multiply
   139,420.30x = 192,401.23 × 75,758.10
4. Step 4: Simplify right side
   139,420.30x = 14,575,950,660.46
5. Step 5: Solve for x
   x = 14,575,950,660.46/139,420.30
6. Step 6: Final answer
   x = 104,546.83