Finding the Fourth Proportional to 300,499,774.14, 415,078,687.36 and 248,498,862.78

Step by Step Solution

1. Step 1: Write the proportion equation
   300,499,774.14 : 415,078,687.36 = 248,498,862.78 : x
2. Step 2: Convert to fraction form
   300,499,774.14/415,078,687.36 = 248,498,862.78/x
3. Step 3: Cross multiply
   300,499,774.14x = 415,078,687.36 × 248,498,862.78
4. Step 4: Simplify right side
   300,499,774.14x = 103,146,581,773,175,168
5. Step 5: Solve for x
   x = 103,146,581,773,175,168/300,499,774.14
6. Step 6: Final answer
   x = 343,250,114.14