Finding the Fourth Proportional to 300,499,786.63, 415,078,704.66 and 248,498,875.27

Step by Step Solution

1. Step 1: Write the proportion equation
   300,499,786.63 : 415,078,704.66 = 248,498,875.27 : x
2. Step 2: Convert to fraction form
   300,499,786.63/415,078,704.66 = 248,498,875.27/x
3. Step 3: Cross multiply
   300,499,786.63x = 415,078,704.66 × 248,498,875.27
4. Step 4: Simplify right side
   300,499,786.63x = 103,146,591,256,538,512
5. Step 5: Solve for x
   x = 103,146,591,256,538,512/300,499,786.63
6. Step 6: Final answer
   x = 343,250,131.43