Finding the Fourth Proportional to 78,086.64, 107,759.63 and 42,276.68

Step by Step Solution

1. Step 1: Write the proportion equation
   78,086.64 : 107,759.63 = 42,276.68 : x
2. Step 2: Convert to fraction form
   78,086.64/107,759.63 = 42,276.68/x
3. Step 3: Cross multiply
   78,086.64x = 107,759.63 × 42,276.68
4. Step 4: Simplify right side
   78,086.64x = 4,555,718,644.25
5. Step 5: Solve for x
   x = 4,555,718,644.25/78,086.64
6. Step 6: Final answer
   x = 58,341.84