Finding the Fourth Proportional to 47,540.94, 65,492.10 and 39,987.42

Step by Step Solution

1. Step 1: Write the proportion equation
   47,540.94 : 65,492.10 = 39,987.42 : x
2. Step 2: Convert to fraction form
   47,540.94/65,492.10 = 39,987.42/x
3. Step 3: Cross multiply
   47,540.94x = 65,492.10 × 39,987.42
4. Step 4: Simplify right side
   47,540.94x = 2,618,860,109.38
5. Step 5: Solve for x
   x = 2,618,860,109.38/47,540.94
6. Step 6: Final answer
   x = 55,086.42