Finding the Fourth Proportional to 111,441.61, 153,789.19 and 63,721.27

Step by Step Solution

1. Step 1: Write the proportion equation
   111,441.61 : 153,789.19 = 63,721.27 : x
2. Step 2: Convert to fraction form
   111,441.61/153,789.19 = 63,721.27/x
3. Step 3: Cross multiply
   111,441.61x = 153,789.19 × 63,721.27
4. Step 4: Simplify right side
   111,441.61x = 9,799,642,499.07
5. Step 5: Solve for x
   x = 9,799,642,499.07/111,441.61
6. Step 6: Final answer
   x = 87,935.22