Finding the Fourth Proportional to 30,892.16, 42,649.56 and 20,300.24

Step by Step Solution

1. Step 1: Write the proportion equation
   30,892.16 : 42,649.56 = 20,300.24 : x
2. Step 2: Convert to fraction form
   30,892.16/42,649.56 = 20,300.24/x
3. Step 3: Cross multiply
   30,892.16x = 42,649.56 × 20,300.24
4. Step 4: Simplify right side
   30,892.16x = 865,796,303.89
5. Step 5: Solve for x
   x = 865,796,303.89/30,892.16
6. Step 6: Final answer
   x = 28,026.41