Finding the Fourth Proportional to 139,662.60, 192,736.18 and 76,002.12

Step by Step Solution

1. Step 1: Write the proportion equation
   139,662.60 : 192,736.18 = 76,002.12 : x
2. Step 2: Convert to fraction form
   139,662.60/192,736.18 = 76,002.12/x
3. Step 3: Cross multiply
   139,662.60x = 192,736.18 × 76,002.12
4. Step 4: Simplify right side
   139,662.60x = 14,648,358,280.70
5. Step 5: Solve for x
   x = 14,648,358,280.70/139,662.60
6. Step 6: Final answer
   x = 104,883.90