Finding the Fourth Proportional to 139,423.30, 192,405.38 and 75,761.10

Step by Step Solution

1. Step 1: Write the proportion equation
   139,423.30 : 192,405.38 = 75,761.10 : x
2. Step 2: Convert to fraction form
   139,423.30/192,405.38 = 75,761.10/x
3. Step 3: Cross multiply
   139,423.30x = 192,405.38 × 75,761.10
4. Step 4: Simplify right side
   139,423.30x = 14,576,843,234.72
5. Step 5: Solve for x
   x = 14,576,843,234.72/139,423.30
6. Step 6: Final answer
   x = 104,550.98