Finding the Fourth Proportional to 78,605.98, 108,478.20 and 42,797.96

Step by Step Solution

1. Step 1: Write the proportion equation
   78,605.98 : 108,478.20 = 42,797.96 : x
2. Step 2: Convert to fraction form
   78,605.98/108,478.20 = 42,797.96/x
3. Step 3: Cross multiply
   78,605.98x = 108,478.20 × 42,797.96
4. Step 4: Simplify right side
   78,605.98x = 4,642,645,664.47
5. Step 5: Solve for x
   x = 4,642,645,664.47/78,605.98
6. Step 6: Final answer
   x = 59,062.25