Finding the Fourth Proportional to 78,456.48, 108,271.20 and 42,646.56

Step by Step Solution

1. Step 1: Write the proportion equation
   78,456.48 : 108,271.20 = 42,646.56 : x
2. Step 2: Convert to fraction form
   78,456.48/108,271.20 = 42,646.56/x
3. Step 3: Cross multiply
   78,456.48x = 108,271.20 × 42,646.56
4. Step 4: Simplify right side
   78,456.48x = 4,617,394,227.07
5. Step 5: Solve for x
   x = 4,617,394,227.07/78,456.48
6. Step 6: Final answer
   x = 58,852.94