Finding the Fourth Proportional to 78,086.98, 107,759.88 and 42,276.99

Step by Step Solution

1. Step 1: Write the proportion equation
   78,086.98 : 107,759.88 = 42,276.99 : x
2. Step 2: Convert to fraction form
   78,086.98/107,759.88 = 42,276.99/x
3. Step 3: Cross multiply
   78,086.98x = 107,759.88 × 42,276.99
4. Step 4: Simplify right side
   78,086.98x = 4,555,763,369.16
5. Step 5: Solve for x
   x = 4,555,763,369.16/78,086.98
6. Step 6: Final answer
   x = 58,342.16