Finding the Fourth Proportional to 65,285.02, 89,506.59 and 64,104.04

Step by Step Solution

1. Step 1: Write the proportion equation
   65,285.02 : 89,506.59 = 64,104.04 : x
2. Step 2: Convert to fraction form
   65,285.02/89,506.59 = 64,104.04/x
3. Step 3: Cross multiply
   65,285.02x = 89,506.59 × 64,104.04
4. Step 4: Simplify right side
   65,285.02x = 5,737,733,257.57
5. Step 5: Solve for x
   x = 5,737,733,257.57/65,285.02
6. Step 6: Final answer
   x = 87,887.45