Finding the Fourth Proportional to 139,728, 192,824.32 and 76,066.24

Step by Step Solution

1. Step 1: Write the proportion equation
   139,728 : 192,824.32 = 76,066.24 : x
2. Step 2: Convert to fraction form
   139,728/192,824.32 = 76,066.24/x
3. Step 3: Cross multiply
   139,728x = 192,824.32 × 76,066.24
4. Step 4: Simplify right side
   139,728x = 14,667,421,002.96
5. Step 5: Solve for x
   x = 14,667,421,002.96/139,728
6. Step 6: Final answer
   x = 104,971.24