Finding the Fourth Proportional to 90,367.42, 135,588.34 and 39,740.42

Step by Step Solution

1. Step 1: Write the proportion equation
   90,367.42 : 135,588.34 = 39,740.42 : x
2. Step 2: Convert to fraction form
   90,367.42/135,588.34 = 39,740.42/x
3. Step 3: Cross multiply
   90,367.42x = 135,588.34 × 39,740.42
4. Step 4: Simplify right side
   90,367.42x = 5,388,337,219.27
5. Step 5: Solve for x
   x = 5,388,337,219.27/90,367.42
6. Step 6: Final answer
   x = 59,626.99