Finding the Fourth Proportional to 64,540.72, 89,066.55 and 35,860.42

Step by Step Solution

1. Step 1: Write the proportion equation
   64,540.72 : 89,066.55 = 35,860.42 : x
2. Step 2: Convert to fraction form
   64,540.72/89,066.55 = 35,860.42/x
3. Step 3: Cross multiply
   64,540.72x = 89,066.55 × 35,860.42
4. Step 4: Simplify right side
   64,540.72x = 3,193,963,890.95
5. Step 5: Solve for x
   x = 3,193,963,890.95/64,540.72
6. Step 6: Final answer
   x = 49,487.58