Finding the Fourth Proportional to 42,502.08, 63,714.24 and 21,720.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,502.08 : 63,714.24 = 21,720.72 : x
2. Step 2: Convert to fraction form
   42,502.08/63,714.24 = 21,720.72/x
3. Step 3: Cross multiply
   42,502.08x = 63,714.24 × 21,720.72
4. Step 4: Simplify right side
   42,502.08x = 1,383,919,167.05
5. Step 5: Solve for x
   x = 1,383,919,167.05/42,502.08
6. Step 6: Final answer
   x = 32,561.21