Finding the Fourth Proportional to 300,003.60, 449,940.60 and 131,523.60

Step by Step Solution

1. Step 1: Write the proportion equation
   300,003.60 : 449,940.60 = 131,523.60 : x
2. Step 2: Convert to fraction form
   300,003.60/449,940.60 = 131,523.60/x
3. Step 3: Cross multiply
   300,003.60x = 449,940.60 × 131,523.60
4. Step 4: Simplify right side
   300,003.60x = 59,177,807,498.16
5. Step 5: Solve for x
   x = 59,177,807,498.16/300,003.60
6. Step 6: Final answer
   x = 197,256.99