Finding the Fourth Proportional to 139,422.98, 192,403.31 and 75,760.76

Step by Step Solution

1. Step 1: Write the proportion equation
   139,422.98 : 192,403.31 = 75,760.76 : x
2. Step 2: Convert to fraction form
   139,422.98/192,403.31 = 75,760.76/x
3. Step 3: Cross multiply
   139,422.98x = 192,403.31 × 75,760.76
4. Step 4: Simplify right side
   139,422.98x = 14,576,619,651.30
5. Step 5: Solve for x
   x = 14,576,619,651.30/139,422.98
6. Step 6: Final answer
   x = 104,549.62