Finding the Fourth Proportional to 612,399.72, 918,635.33 and 185,949.45

Step by Step Solution

1. Step 1: Write the proportion equation
   612,399.72 : 918,635.33 = 185,949.45 : x
2. Step 2: Convert to fraction form
   612,399.72/918,635.33 = 185,949.45/x
3. Step 3: Cross multiply
   612,399.72x = 918,635.33 × 185,949.45
4. Step 4: Simplify right side
   612,399.72x = 170,819,733,434.32
5. Step 5: Solve for x
   x = 170,819,733,434.32/612,399.72
6. Step 6: Final answer
   x = 278,935.03