Finding the Fourth Proportional to 85,885.72, 118,523.46 and 64,337.29

Step by Step Solution

1. Step 1: Write the proportion equation
   85,885.72 : 118,523.46 = 64,337.29 : x
2. Step 2: Convert to fraction form
   85,885.72/118,523.46 = 64,337.29/x
3. Step 3: Cross multiply
   85,885.72x = 118,523.46 × 64,337.29
4. Step 4: Simplify right side
   85,885.72x = 7,625,478,217.82
5. Step 5: Solve for x
   x = 7,625,478,217.82/85,885.72
6. Step 6: Final answer
   x = 88,786.33