Finding the Fourth Proportional to 78,086.58, 107,759.54 and 42,276.62

Step by Step Solution

1. Step 1: Write the proportion equation
   78,086.58 : 107,759.54 = 42,276.62 : x
2. Step 2: Convert to fraction form
   78,086.58/107,759.54 = 42,276.62/x
3. Step 3: Cross multiply
   78,086.58x = 107,759.54 × 42,276.62
4. Step 4: Simplify right side
   78,086.58x = 4,555,709,123.95
5. Step 5: Solve for x
   x = 4,555,709,123.95/78,086.58
6. Step 6: Final answer
   x = 58,341.77