Finding the Fourth Proportional to 78,457.24, 108,271.38 and 42,647.25

Step by Step Solution

1. Step 1: Write the proportion equation
   78,457.24 : 108,271.38 = 42,647.25 : x
2. Step 2: Convert to fraction form
   78,457.24/108,271.38 = 42,647.25/x
3. Step 3: Cross multiply
   78,457.24x = 108,271.38 × 42,647.25
4. Step 4: Simplify right side
   78,457.24x = 4,617,476,397.47
5. Step 5: Solve for x
   x = 4,617,476,397.47/78,457.24
6. Step 6: Final answer
   x = 58,853.41