Finding the Fourth Proportional to 159,870.71, 220,620.51 and 88,250.72

Step by Step Solution

1. Step 1: Write the proportion equation
   159,870.71 : 220,620.51 = 88,250.72 : x
2. Step 2: Convert to fraction form
   159,870.71/220,620.51 = 88,250.72/x
3. Step 3: Cross multiply
   159,870.71x = 220,620.51 × 88,250.72
4. Step 4: Simplify right side
   159,870.71x = 19,469,917,751.16
5. Step 5: Solve for x
   x = 19,469,917,751.16/159,870.71
6. Step 6: Final answer
   x = 121,785.39