Finding the Fourth Proportional to 667,498.41, 921,152.24 and 361,574.79

Step by Step Solution

1. Step 1: Write the proportion equation
   667,498.41 : 921,152.24 = 361,574.79 : x
2. Step 2: Convert to fraction form
   667,498.41/921,152.24 = 361,574.79/x
3. Step 3: Cross multiply
   667,498.41x = 921,152.24 × 361,574.79
4. Step 4: Simplify right side
   667,498.41x = 333,065,425,928.16
5. Step 5: Solve for x
   x = 333,065,425,928.16/667,498.41
6. Step 6: Final answer
   x = 498,975.61