Finding the Fourth Proportional to 78,570.28, 108,424.91 and 42,759.53

Step by Step Solution

1. Step 1: Write the proportion equation
   78,570.28 : 108,424.91 = 42,759.53 : x
2. Step 2: Convert to fraction form
   78,570.28/108,424.91 = 42,759.53/x
3. Step 3: Cross multiply
   78,570.28x = 108,424.91 × 42,759.53
4. Step 4: Simplify right side
   78,570.28x = 4,636,198,191.89
5. Step 5: Solve for x
   x = 4,636,198,191.89/78,570.28
6. Step 6: Final answer
   x = 59,007.02