Finding the Fourth Proportional to 78,649.33, 108,537.74 and 42,839.25

Step by Step Solution

1. Step 1: Write the proportion equation
   78,649.33 : 108,537.74 = 42,839.25 : x
2. Step 2: Convert to fraction form
   78,649.33/108,537.74 = 42,839.25/x
3. Step 3: Cross multiply
   78,649.33x = 108,537.74 × 42,839.25
4. Step 4: Simplify right side
   78,649.33x = 4,649,675,542.54
5. Step 5: Solve for x
   x = 4,649,675,542.54/78,649.33
6. Step 6: Final answer
   x = 59,119.08