Finding the Fourth Proportional to 139,768.24, 192,885 and 76,107.12

Step by Step Solution

1. Step 1: Write the proportion equation
   139,768.24 : 192,885 = 76,107.12 : x
2. Step 2: Convert to fraction form
   139,768.24/192,885 = 76,107.12/x
3. Step 3: Cross multiply
   139,768.24x = 192,885 × 76,107.12
4. Step 4: Simplify right side
   139,768.24x = 14,679,921,841.20
5. Step 5: Solve for x
   x = 14,679,921,841.20/139,768.24
6. Step 6: Final answer
   x = 105,030.45