Finding the Fourth Proportional to 42,404.88, 63,576.60 and 21,612.56

Step by Step Solution

1. Step 1: Write the proportion equation
   42,404.88 : 63,576.60 = 21,612.56 : x
2. Step 2: Convert to fraction form
   42,404.88/63,576.60 = 21,612.56/x
3. Step 3: Cross multiply
   42,404.88x = 63,576.60 × 21,612.56
4. Step 4: Simplify right side
   42,404.88x = 1,374,053,082.10
5. Step 5: Solve for x
   x = 1,374,053,082.10/42,404.88
6. Step 6: Final answer
   x = 32,403.18