Finding the Fourth Proportional to 139,148.43, 191,906.30 and 106,960.96

Step by Step Solution

1. Step 1: Write the proportion equation
   139,148.43 : 191,906.30 = 106,960.96 : x
2. Step 2: Convert to fraction form
   139,148.43/191,906.30 = 106,960.96/x
3. Step 3: Cross multiply
   139,148.43x = 191,906.30 × 106,960.96
4. Step 4: Simplify right side
   139,148.43x = 20,526,482,131.87
5. Step 5: Solve for x
   x = 20,526,482,131.87/139,148.43
6. Step 6: Final answer
   x = 147,515.01