Finding the Fourth Proportional to 139,481.46, 192,577.10 and 107,158.50

Step by Step Solution

1. Step 1: Write the proportion equation
   139,481.46 : 192,577.10 = 107,158.50 : x
2. Step 2: Convert to fraction form
   139,481.46/192,577.10 = 107,158.50/x
3. Step 3: Cross multiply
   139,481.46x = 192,577.10 × 107,158.50
4. Step 4: Simplify right side
   139,481.46x = 20,636,272,634.56
5. Step 5: Solve for x
   x = 20,636,272,634.56/139,481.46
6. Step 6: Final answer
   x = 147,949.93