Finding the Fourth Proportional to 152,862.57, 210,975.39 and 89,200.17

Step by Step Solution

1. Step 1: Write the proportion equation
   152,862.57 : 210,975.39 = 89,200.17 : x
2. Step 2: Convert to fraction form
   152,862.57/210,975.39 = 89,200.17/x
3. Step 3: Cross multiply
   152,862.57x = 210,975.39 × 89,200.17
4. Step 4: Simplify right side
   152,862.57x = 18,819,040,653.82
5. Step 5: Solve for x
   x = 18,819,040,653.82/152,862.57
6. Step 6: Final answer
   x = 123,110.85