Finding the Fourth Proportional to 78,634.56, 108,515.70 and 42,824.56

Step by Step Solution

1. Step 1: Write the proportion equation
   78,634.56 : 108,515.70 = 42,824.56 : x
2. Step 2: Convert to fraction form
   78,634.56/108,515.70 = 42,824.56/x
3. Step 3: Cross multiply
   78,634.56x = 108,515.70 × 42,824.56
4. Step 4: Simplify right side
   78,634.56x = 4,647,137,105.59
5. Step 5: Solve for x
   x = 4,647,137,105.59/78,634.56
6. Step 6: Final answer
   x = 59,097.90