Finding the Fourth Proportional to 78,464.88, 108,281.52 and 42,654.78

Step by Step Solution

1. Step 1: Write the proportion equation
   78,464.88 : 108,281.52 = 42,654.78 : x
2. Step 2: Convert to fraction form
   78,464.88/108,281.52 = 42,654.78/x
3. Step 3: Cross multiply
   78,464.88x = 108,281.52 × 42,654.78
4. Step 4: Simplify right side
   78,464.88x = 4,618,724,413.67
5. Step 5: Solve for x
   x = 4,618,724,413.67/78,464.88
6. Step 6: Final answer
   x = 58,863.59