Finding the Fourth Proportional to 78,276.43, 108,021.51 and 42,466.43

Step by Step Solution

1. Step 1: Write the proportion equation
   78,276.43 : 108,021.51 = 42,466.43 : x
2. Step 2: Convert to fraction form
   78,276.43/108,021.51 = 42,466.43/x
3. Step 3: Cross multiply
   78,276.43x = 108,021.51 × 42,466.43
4. Step 4: Simplify right side
   78,276.43x = 4,587,287,892.91
5. Step 5: Solve for x
   x = 4,587,287,892.91/78,276.43
6. Step 6: Final answer
   x = 58,603.69