Finding the Fourth Proportional to 71,898.72, 107,838 and 30,336

Step by Step Solution

1. Step 1: Write the proportion equation
   71,898.72 : 107,838 = 30,336 : x
2. Step 2: Convert to fraction form
   71,898.72/107,838 = 30,336/x
3. Step 3: Cross multiply
   71,898.72x = 107,838 × 30,336
4. Step 4: Simplify right side
   71,898.72x = 3,271,373,568
5. Step 5: Solve for x
   x = 3,271,373,568/71,898.72
6. Step 6: Final answer
   x = 45,499.75