Finding the Fourth Proportional to 215,583.22, 323,413.86 and 89,154.88

Step by Step Solution

1. Step 1: Write the proportion equation
   215,583.22 : 323,413.86 = 89,154.88 : x
2. Step 2: Convert to fraction form
   215,583.22/323,413.86 = 89,154.88/x
3. Step 3: Cross multiply
   215,583.22x = 323,413.86 × 89,154.88
4. Step 4: Simplify right side
   215,583.22x = 28,833,923,404.43
5. Step 5: Solve for x
   x = 28,833,923,404.43/215,583.22
6. Step 6: Final answer
   x = 133,748.46