Finding the Fourth Proportional to 108,716.69, 149,890.15 and 70,408.55

Step by Step Solution

1. Step 1: Write the proportion equation
   108,716.69 : 149,890.15 = 70,408.55 : x
2. Step 2: Convert to fraction form
   108,716.69/149,890.15 = 70,408.55/x
3. Step 3: Cross multiply
   108,716.69x = 149,890.15 × 70,408.55
4. Step 4: Simplify right side
   108,716.69x = 10,553,548,120.78
5. Step 5: Solve for x
   x = 10,553,548,120.78/108,716.69
6. Step 6: Final answer
   x = 97,073.85