Finding the Fourth Proportional to 83,574.78, 125,362.42 and 21,245.28

Step by Step Solution

1. Step 1: Write the proportion equation
   83,574.78 : 125,362.42 = 21,245.28 : x
2. Step 2: Convert to fraction form
   83,574.78/125,362.42 = 21,245.28/x
3. Step 3: Cross multiply
   83,574.78x = 125,362.42 × 21,245.28
4. Step 4: Simplify right side
   83,574.78x = 2,663,359,714.38
5. Step 5: Solve for x
   x = 2,663,359,714.38/83,574.78
6. Step 6: Final answer
   x = 31,867.98