Finding the Fourth Proportional to 139,664.28, 192,736.35 and 76,002.06

Step by Step Solution

1. Step 1: Write the proportion equation
   139,664.28 : 192,736.35 = 76,002.06 : x
2. Step 2: Convert to fraction form
   139,664.28/192,736.35 = 76,002.06/x
3. Step 3: Cross multiply
   139,664.28x = 192,736.35 × 76,002.06
4. Step 4: Simplify right side
   139,664.28x = 14,648,359,636.88
5. Step 5: Solve for x
   x = 14,648,359,636.88/139,664.28
6. Step 6: Final answer
   x = 104,882.65