Finding the Fourth Proportional to 78,569.79, 108,424.23 and 42,759.03

Step by Step Solution

1. Step 1: Write the proportion equation
   78,569.79 : 108,424.23 = 42,759.03 : x
2. Step 2: Convert to fraction form
   78,569.79/108,424.23 = 42,759.03/x
3. Step 3: Cross multiply
   78,569.79x = 108,424.23 × 42,759.03
4. Step 4: Simplify right side
   78,569.79x = 4,636,114,903.30
5. Step 5: Solve for x
   x = 4,636,114,903.30/78,569.79
6. Step 6: Final answer
   x = 59,006.33