Finding the Fourth Proportional to 78,144.58, 107,839.17 and 42,334.68

Step by Step Solution

1. Step 1: Write the proportion equation
   78,144.58 : 107,839.17 = 42,334.68 : x
2. Step 2: Convert to fraction form
   78,144.58/107,839.17 = 42,334.68/x
3. Step 3: Cross multiply
   78,144.58x = 107,839.17 × 42,334.68
4. Step 4: Simplify right side
   78,144.58x = 4,565,336,753.42
5. Step 5: Solve for x
   x = 4,565,336,753.42/78,144.58
6. Step 6: Final answer
   x = 58,421.67