Finding the Fourth Proportional to 30,621.29, 42,256.01 and 17,192.30

Step by Step Solution

1. Step 1: Write the proportion equation
   30,621.29 : 42,256.01 = 17,192.30 : x
2. Step 2: Convert to fraction form
   30,621.29/42,256.01 = 17,192.30/x
3. Step 3: Cross multiply
   30,621.29x = 42,256.01 × 17,192.30
4. Step 4: Simplify right side
   30,621.29x = 726,477,703.48
5. Step 5: Solve for x
   x = 726,477,703.48/30,621.29
6. Step 6: Final answer
   x = 23,724.60