Finding the Fourth Proportional to 645,443.94, 967,498.86 and 245,977.47

Step by Step Solution

1. Step 1: Write the proportion equation
   645,443.94 : 967,498.86 = 245,977.47 : x
2. Step 2: Convert to fraction form
   645,443.94/967,498.86 = 245,977.47/x
3. Step 3: Cross multiply
   645,443.94x = 967,498.86 × 245,977.47
4. Step 4: Simplify right side
   645,443.94x = 237,982,921,810.68
5. Step 5: Solve for x
   x = 237,982,921,810.68/645,443.94
6. Step 6: Final answer
   x = 368,711.99