Finding the Fourth Proportional to 88,500.21, 122,010.88 and 85,748.37

Step by Step Solution

1. Step 1: Write the proportion equation
   88,500.21 : 122,010.88 = 85,748.37 : x
2. Step 2: Convert to fraction form
   88,500.21/122,010.88 = 85,748.37/x
3. Step 3: Cross multiply
   88,500.21x = 122,010.88 × 85,748.37
4. Step 4: Simplify right side
   88,500.21x = 10,462,234,082.27
5. Step 5: Solve for x
   x = 10,462,234,082.27/88,500.21
6. Step 6: Final answer
   x = 118,217.05