Finding the Fourth Proportional to 78,469.56, 108,290.12 and 42,662.04

Step by Step Solution

1. Step 1: Write the proportion equation
   78,469.56 : 108,290.12 = 42,662.04 : x
2. Step 2: Convert to fraction form
   78,469.56/108,290.12 = 42,662.04/x
3. Step 3: Cross multiply
   78,469.56x = 108,290.12 × 42,662.04
4. Step 4: Simplify right side
   78,469.56x = 4,619,876,996.25
5. Step 5: Solve for x
   x = 4,619,876,996.25/78,469.56
6. Step 6: Final answer
   x = 58,874.77