Finding the Fourth Proportional to 111,995.68, 154,499.55 and 71,677.12

Step by Step Solution

1. Step 1: Write the proportion equation
   111,995.68 : 154,499.55 = 71,677.12 : x
2. Step 2: Convert to fraction form
   111,995.68/154,499.55 = 71,677.12/x
3. Step 3: Cross multiply
   111,995.68x = 154,499.55 × 71,677.12
4. Step 4: Simplify right side
   111,995.68x = 11,074,082,785.30
5. Step 5: Solve for x
   x = 11,074,082,785.30/111,995.68
6. Step 6: Final answer
   x = 98,879.55