Finding the Fourth Proportional to 42,576.55, 63,904.25 and 21,531.49

Step by Step Solution

1. Step 1: Write the proportion equation
   42,576.55 : 63,904.25 = 21,531.49 : x
2. Step 2: Convert to fraction form
   42,576.55/63,904.25 = 21,531.49/x
3. Step 3: Cross multiply
   42,576.55x = 63,904.25 × 21,531.49
4. Step 4: Simplify right side
   42,576.55x = 1,375,953,613.90
5. Step 5: Solve for x
   x = 1,375,953,613.90/42,576.55
6. Step 6: Final answer
   x = 32,317.17