Finding the Fourth Proportional to 78,636.22, 108,518.54 and 42,825.51

Step by Step Solution

1. Step 1: Write the proportion equation
   78,636.22 : 108,518.54 = 42,825.51 : x
2. Step 2: Convert to fraction form
   78,636.22/108,518.54 = 42,825.51/x
3. Step 3: Cross multiply
   78,636.22x = 108,518.54 × 42,825.51
4. Step 4: Simplify right side
   78,636.22x = 4,647,361,605.83
5. Step 5: Solve for x
   x = 4,647,361,605.83/78,636.22
6. Step 6: Final answer
   x = 59,099.51