Finding the Fourth Proportional to 65,315.50, 90,114.10 and 38,085.43

Step by Step Solution

1. Step 1: Write the proportion equation
   65,315.50 : 90,114.10 = 38,085.43 : x
2. Step 2: Convert to fraction form
   65,315.50/90,114.10 = 38,085.43/x
3. Step 3: Cross multiply
   65,315.50x = 90,114.10 × 38,085.43
4. Step 4: Simplify right side
   65,315.50x = 3,432,034,103.20
5. Step 5: Solve for x
   x = 3,432,034,103.20/65,315.50
6. Step 6: Final answer
   x = 52,545.48