Finding the Fourth Proportional to 111,578.67, 153,978.37 and 61,277.67

Step by Step Solution

1. Step 1: Write the proportion equation
   111,578.67 : 153,978.37 = 61,277.67 : x
2. Step 2: Convert to fraction form
   111,578.67/153,978.37 = 61,277.67/x
3. Step 3: Cross multiply
   111,578.67x = 153,978.37 × 61,277.67
4. Step 4: Simplify right side
   111,578.67x = 9,435,435,744.00
5. Step 5: Solve for x
   x = 9,435,435,744.00/111,578.67
6. Step 6: Final answer
   x = 84,563.08