Finding the Fourth Proportional to 78,144.50, 107,839.49 and 42,334.19

Step by Step Solution

1. Step 1: Write the proportion equation
   78,144.50 : 107,839.49 = 42,334.19 : x
2. Step 2: Convert to fraction form
   78,144.50/107,839.49 = 42,334.19/x
3. Step 3: Cross multiply
   78,144.50x = 107,839.49 × 42,334.19
4. Step 4: Simplify right side
   78,144.50x = 4,565,297,834.60
5. Step 5: Solve for x
   x = 4,565,297,834.60/78,144.50
6. Step 6: Final answer
   x = 58,421.23