Finding the Fourth Proportional to 78,086.24, 107,758.87 and 42,276.25

Step by Step Solution

1. Step 1: Write the proportion equation
   78,086.24 : 107,758.87 = 42,276.25 : x
2. Step 2: Convert to fraction form
   78,086.24/107,758.87 = 42,276.25/x
3. Step 3: Cross multiply
   78,086.24x = 107,758.87 × 42,276.25
4. Step 4: Simplify right side
   78,086.24x = 4,555,640,927.84
5. Step 5: Solve for x
   x = 4,555,640,927.84/78,086.24
6. Step 6: Final answer
   x = 58,341.15