Finding the Fourth Proportional to 111,860.10, 154,366.89 and 61,559.10

Step by Step Solution

1. Step 1: Write the proportion equation
   111,860.10 : 154,366.89 = 61,559.10 : x
2. Step 2: Convert to fraction form
   111,860.10/154,366.89 = 61,559.10/x
3. Step 3: Cross multiply
   111,860.10x = 154,366.89 × 61,559.10
4. Step 4: Simplify right side
   111,860.10x = 9,502,686,818.20
5. Step 5: Solve for x
   x = 9,502,686,818.20/111,860.10
6. Step 6: Final answer
   x = 84,951.53