Finding the Fourth Proportional to 218,978.34, 328,466.79 and 52,766.34

Step by Step Solution

1. Step 1: Write the proportion equation
   218,978.34 : 328,466.79 = 52,766.34 : x
2. Step 2: Convert to fraction form
   218,978.34/328,466.79 = 52,766.34/x
3. Step 3: Cross multiply
   218,978.34x = 328,466.79 × 52,766.34
4. Step 4: Simplify right side
   218,978.34x = 17,331,990,319.85
5. Step 5: Solve for x
   x = 17,331,990,319.85/218,978.34
6. Step 6: Final answer
   x = 79,149.34