Finding the Fourth Proportional to 108,560.79, 149,770.78 and 67,700.88

Step by Step Solution

1. Step 1: Write the proportion equation
   108,560.79 : 149,770.78 = 67,700.88 : x
2. Step 2: Convert to fraction form
   108,560.79/149,770.78 = 67,700.88/x
3. Step 3: Cross multiply
   108,560.79x = 149,770.78 × 67,700.88
4. Step 4: Simplify right side
   108,560.79x = 10,139,613,435.03
5. Step 5: Solve for x
   x = 10,139,613,435.03/108,560.79
6. Step 6: Final answer
   x = 93,400.33