Finding the Fourth Proportional to 144,131.50, 198,967.79 and 108,333.05

Step by Step Solution

1. Step 1: Write the proportion equation
   144,131.50 : 198,967.79 = 108,333.05 : x
2. Step 2: Convert to fraction form
   144,131.50/198,967.79 = 108,333.05/x
3. Step 3: Cross multiply
   144,131.50x = 198,967.79 × 108,333.05
4. Step 4: Simplify right side
   144,131.50x = 21,554,786,818.45
5. Step 5: Solve for x
   x = 21,554,786,818.45/144,131.50
6. Step 6: Final answer
   x = 149,549.45