Finding the Fourth Proportional to 419,196.84, 578,458.41 and 237,908.76

Step by Step Solution

1. Step 1: Write the proportion equation
   419,196.84 : 578,458.41 = 237,908.76 : x
2. Step 2: Convert to fraction form
   419,196.84/578,458.41 = 237,908.76/x
3. Step 3: Cross multiply
   419,196.84x = 578,458.41 × 237,908.76
4. Step 4: Simplify right side
   419,196.84x = 137,620,323,034.67
5. Step 5: Solve for x
   x = 137,620,323,034.67/419,196.84
6. Step 6: Final answer
   x = 328,295.23