Finding the Fourth Proportional to 139,719.22, 192,812.55 and 76,057.50

Step by Step Solution

1. Step 1: Write the proportion equation
   139,719.22 : 192,812.55 = 76,057.50 : x
2. Step 2: Convert to fraction form
   139,719.22/192,812.55 = 76,057.50/x
3. Step 3: Cross multiply
   139,719.22x = 192,812.55 × 76,057.50
4. Step 4: Simplify right side
   139,719.22x = 14,664,839,177.27
5. Step 5: Solve for x
   x = 14,664,839,177.27/139,719.22
6. Step 6: Final answer
   x = 104,959.35