Finding the Fourth Proportional to 111,379.82, 153,690.36 and 71,117.15

Step by Step Solution

1. Step 1: Write the proportion equation
   111,379.82 : 153,690.36 = 71,117.15 : x
2. Step 2: Convert to fraction form
   111,379.82/153,690.36 = 71,117.15/x
3. Step 3: Cross multiply
   111,379.82x = 153,690.36 × 71,117.15
4. Step 4: Simplify right side
   111,379.82x = 10,930,019,617.22
5. Step 5: Solve for x
   x = 10,930,019,617.22/111,379.82
6. Step 6: Final answer
   x = 98,132.86