Finding the Fourth Proportional to 139,665.28, 192,742.14 and 76,007.16

Step by Step Solution

1. Step 1: Write the proportion equation
   139,665.28 : 192,742.14 = 76,007.16 : x
2. Step 2: Convert to fraction form
   139,665.28/192,742.14 = 76,007.16/x
3. Step 3: Cross multiply
   139,665.28x = 192,742.14 × 76,007.16
4. Step 4: Simplify right side
   139,665.28x = 14,649,782,673.72
5. Step 5: Solve for x
   x = 14,649,782,673.72/139,665.28
6. Step 6: Final answer
   x = 104,892.09