Finding the Fourth Proportional to 308,385.12, 462,645.72 and 131,043.72

Step by Step Solution

1. Step 1: Write the proportion equation
   308,385.12 : 462,645.72 = 131,043.72 : x
2. Step 2: Convert to fraction form
   308,385.12/462,645.72 = 131,043.72/x
3. Step 3: Cross multiply
   308,385.12x = 462,645.72 × 131,043.72
4. Step 4: Simplify right side
   308,385.12x = 60,626,816,190.88
5. Step 5: Solve for x
   x = 60,626,816,190.88/308,385.12
6. Step 6: Final answer
   x = 196,594.49