Finding the Fourth Proportional to 111,986.67, 154,541.61 and 61,685.67

Step by Step Solution

1. Step 1: Write the proportion equation
   111,986.67 : 154,541.61 = 61,685.67 : x
2. Step 2: Convert to fraction form
   111,986.67/154,541.61 = 61,685.67/x
3. Step 3: Cross multiply
   111,986.67x = 154,541.61 × 61,685.67
4. Step 4: Simplify right side
   111,986.67x = 9,533,002,755.73
5. Step 5: Solve for x
   x = 9,533,002,755.73/111,986.67
6. Step 6: Final answer
   x = 85,126.23