Finding the Fourth Proportional to 111,581.25, 153,983.34 and 61,280.25

Step by Step Solution

1. Step 1: Write the proportion equation
   111,581.25 : 153,983.34 = 61,280.25 : x
2. Step 2: Convert to fraction form
   111,581.25/153,983.34 = 61,280.25/x
3. Step 3: Cross multiply
   111,581.25x = 153,983.34 × 61,280.25
4. Step 4: Simplify right side
   111,581.25x = 9,436,137,571.04
5. Step 5: Solve for x
   x = 9,436,137,571.04/111,581.25
6. Step 6: Final answer
   x = 84,567.41