Finding the Fourth Proportional to 114,986.67, 158,681.55 and 64,685.67

Step by Step Solution

1. Step 1: Write the proportion equation
   114,986.67 : 158,681.55 = 64,685.67 : x
2. Step 2: Convert to fraction form
   114,986.67/158,681.55 = 64,685.67/x
3. Step 3: Cross multiply
   114,986.67x = 158,681.55 × 64,685.67
4. Step 4: Simplify right side
   114,986.67x = 10,264,422,378.39
5. Step 5: Solve for x
   x = 10,264,422,378.39/114,986.67
6. Step 6: Final answer
   x = 89,266.19