Finding the Fourth Proportional to 111,067.55, 153,224.54 and 65,103.89

Step by Step Solution

1. Step 1: Write the proportion equation
   111,067.55 : 153,224.54 = 65,103.89 : x
2. Step 2: Convert to fraction form
   111,067.55/153,224.54 = 65,103.89/x
3. Step 3: Cross multiply
   111,067.55x = 153,224.54 × 65,103.89
4. Step 4: Simplify right side
   111,067.55x = 9,975,513,597.46
5. Step 5: Solve for x
   x = 9,975,513,597.46/111,067.55
6. Step 6: Final answer
   x = 89,814.83