Finding the Fourth Proportional to 195,738.50, 293,397.86 and 128,245.05

Step by Step Solution

1. Step 1: Write the proportion equation
   195,738.50 : 293,397.86 = 128,245.05 : x
2. Step 2: Convert to fraction form
   195,738.50/293,397.86 = 128,245.05/x
3. Step 3: Cross multiply
   195,738.50x = 293,397.86 × 128,245.05
4. Step 4: Simplify right side
   195,738.50x = 37,626,824,229.31
5. Step 5: Solve for x
   x = 37,626,824,229.31/195,738.50
6. Step 6: Final answer
   x = 192,230.06