Finding the Fourth Proportional to 68,401.72, 102,537 and 21,621.82

Step by Step Solution

1. Step 1: Write the proportion equation
   68,401.72 : 102,537 = 21,621.82 : x
2. Step 2: Convert to fraction form
   68,401.72/102,537 = 21,621.82/x
3. Step 3: Cross multiply
   68,401.72x = 102,537 × 21,621.82
4. Step 4: Simplify right side
   68,401.72x = 2,217,036,557.34
5. Step 5: Solve for x
   x = 2,217,036,557.34/68,401.72
6. Step 6: Final answer
   x = 32,412.00