Finding the Fourth Proportional to 139,715.82, 192,440.54 and 107,388.62

Step by Step Solution

1. Step 1: Write the proportion equation
   139,715.82 : 192,440.54 = 107,388.62 : x
2. Step 2: Convert to fraction form
   139,715.82/192,440.54 = 107,388.62/x
3. Step 3: Cross multiply
   139,715.82x = 192,440.54 × 107,388.62
4. Step 4: Simplify right side
   139,715.82x = 20,665,924,050.58
5. Step 5: Solve for x
   x = 20,665,924,050.58/139,715.82
6. Step 6: Final answer
   x = 147,913.99