Finding the Fourth Proportional to 78,466.96, 108,286.50 and 42,659.38

Step by Step Solution

1. Step 1: Write the proportion equation
   78,466.96 : 108,286.50 = 42,659.38 : x
2. Step 2: Convert to fraction form
   78,466.96/108,286.50 = 42,659.38/x
3. Step 3: Cross multiply
   78,466.96x = 108,286.50 × 42,659.38
4. Step 4: Simplify right side
   78,466.96x = 4,619,434,952.37
5. Step 5: Solve for x
   x = 4,619,434,952.37/78,466.96
6. Step 6: Final answer
   x = 58,871.08