Finding the Fourth Proportional to 139,760.91, 192,868.38 and 76,098.69

Step by Step Solution

1. Step 1: Write the proportion equation
   139,760.91 : 192,868.38 = 76,098.69 : x
2. Step 2: Convert to fraction form
   139,760.91/192,868.38 = 76,098.69/x
3. Step 3: Cross multiply
   139,760.91x = 192,868.38 × 76,098.69
4. Step 4: Simplify right side
   139,760.91x = 14,677,031,060.42
5. Step 5: Solve for x
   x = 14,677,031,060.42/139,760.91
6. Step 6: Final answer
   x = 105,015.28