Finding the Fourth Proportional to 78,086.27, 107,759.12 and 42,276.30

Step by Step Solution

1. Step 1: Write the proportion equation
   78,086.27 : 107,759.12 = 42,276.30 : x
2. Step 2: Convert to fraction form
   78,086.27/107,759.12 = 42,276.30/x
3. Step 3: Cross multiply
   78,086.27x = 107,759.12 × 42,276.30
4. Step 4: Simplify right side
   78,086.27x = 4,555,656,673.47
5. Step 5: Solve for x
   x = 4,555,656,673.47/78,086.27
6. Step 6: Final answer
   x = 58,341.33