Finding the Fourth Proportional to 111,645.78, 154,062.22 and 63,888.18

Step by Step Solution

1. Step 1: Write the proportion equation
   111,645.78 : 154,062.22 = 63,888.18 : x
2. Step 2: Convert to fraction form
   111,645.78/154,062.22 = 63,888.18/x
3. Step 3: Cross multiply
   111,645.78x = 154,062.22 × 63,888.18
4. Step 4: Simplify right side
   111,645.78x = 9,842,754,842.56
5. Step 5: Solve for x
   x = 9,842,754,842.56/111,645.78
6. Step 6: Final answer
   x = 88,160.56