Finding the Fourth Proportional to 111,434.69, 153,742.46 and 63,654.20

Step by Step Solution

1. Step 1: Write the proportion equation
   111,434.69 : 153,742.46 = 63,654.20 : x
2. Step 2: Convert to fraction form
   111,434.69/153,742.46 = 63,654.20/x
3. Step 3: Cross multiply
   111,434.69x = 153,742.46 × 63,654.20
4. Step 4: Simplify right side
   111,434.69x = 9,786,353,297.33
5. Step 5: Solve for x
   x = 9,786,353,297.33/111,434.69
6. Step 6: Final answer
   x = 87,821.43