Finding the Fourth Proportional to 65,286.02, 89,507.96 and 64,105.04

Step by Step Solution

1. Step 1: Write the proportion equation
   65,286.02 : 89,507.96 = 64,105.04 : x
2. Step 2: Convert to fraction form
   65,286.02/89,507.96 = 64,105.04/x
3. Step 3: Cross multiply
   65,286.02x = 89,507.96 × 64,105.04
4. Step 4: Simplify right side
   65,286.02x = 5,737,910,588.05
5. Step 5: Solve for x
   x = 5,737,910,588.05/65,286.02
6. Step 6: Final answer
   x = 87,888.82