Finding the Fourth Proportional to 610,443.12, 916,070.76 and 250,908.78

Step by Step Solution

1. Step 1: Write the proportion equation
   610,443.12 : 916,070.76 = 250,908.78 : x
2. Step 2: Convert to fraction form
   610,443.12/916,070.76 = 250,908.78/x
3. Step 3: Cross multiply
   610,443.12x = 916,070.76 × 250,908.78
4. Step 4: Simplify right side
   610,443.12x = 229,850,196,785.27
5. Step 5: Solve for x
   x = 229,850,196,785.27/610,443.12
6. Step 6: Final answer
   x = 376,530.08