Finding the Fourth Proportional to 42,256.27, 63,292.28 and 21,159.52

Step by Step Solution

1. Step 1: Write the proportion equation
   42,256.27 : 63,292.28 = 21,159.52 : x
2. Step 2: Convert to fraction form
   42,256.27/63,292.28 = 21,159.52/x
3. Step 3: Cross multiply
   42,256.27x = 63,292.28 × 21,159.52
4. Step 4: Simplify right side
   42,256.27x = 1,339,233,842.25
5. Step 5: Solve for x
   x = 1,339,233,842.25/42,256.27
6. Step 6: Final answer
   x = 31,693.14