Finding the Fourth Proportional to 419,503.34, 578,894.69 and 238,191.52

Step by Step Solution

1. Step 1: Write the proportion equation
   419,503.34 : 578,894.69 = 238,191.52 : x
2. Step 2: Convert to fraction form
   419,503.34/578,894.69 = 238,191.52/x
3. Step 3: Cross multiply
   419,503.34x = 578,894.69 × 238,191.52
4. Step 4: Simplify right side
   419,503.34x = 137,887,806,131.03
5. Step 5: Solve for x
   x = 137,887,806,131.03/419,503.34
6. Step 6: Final answer
   x = 328,692.99