Finding the Fourth Proportional to 30,528.99, 42,125.72 and 17,100.81

Step by Step Solution

1. Step 1: Write the proportion equation
   30,528.99 : 42,125.72 = 17,100.81 : x
2. Step 2: Convert to fraction form
   30,528.99/42,125.72 = 17,100.81/x
3. Step 3: Cross multiply
   30,528.99x = 42,125.72 × 17,100.81
4. Step 4: Simplify right side
   30,528.99x = 720,383,848.33
5. Step 5: Solve for x
   x = 720,383,848.33/30,528.99
6. Step 6: Final answer
   x = 23,596.71