Finding the Fourth Proportional to 152,231.69, 210,028.52 and 88,517.09

Step by Step Solution

1. Step 1: Write the proportion equation
   152,231.69 : 210,028.52 = 88,517.09 : x
2. Step 2: Convert to fraction form
   152,231.69/210,028.52 = 88,517.09/x
3. Step 3: Cross multiply
   152,231.69x = 210,028.52 × 88,517.09
4. Step 4: Simplify right side
   152,231.69x = 18,591,111,914.68
5. Step 5: Solve for x
   x = 18,591,111,914.68/152,231.69
6. Step 6: Final answer
   x = 122,123.80