Finding the Fourth Proportional to 111,865.50, 154,376.82 and 61,564.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111,865.50 : 154,376.82 = 61,564.50 : x
2. Step 2: Convert to fraction form
   111,865.50/154,376.82 = 61,564.50/x
3. Step 3: Cross multiply
   111,865.50x = 154,376.82 × 61,564.50
4. Step 4: Simplify right side
   111,865.50x = 9,504,131,734.89
5. Step 5: Solve for x
   x = 9,504,131,734.89/111,865.50
6. Step 6: Final answer
   x = 84,960.35