Finding the Fourth Proportional to 42,082, 63,144.60 and 21,306.04

Step by Step Solution

1. Step 1: Write the proportion equation
   42,082 : 63,144.60 = 21,306.04 : x
2. Step 2: Convert to fraction form
   42,082/63,144.60 = 21,306.04/x
3. Step 3: Cross multiply
   42,082x = 63,144.60 × 21,306.04
4. Step 4: Simplify right side
   42,082x = 1,345,361,373.38
5. Step 5: Solve for x
   x = 1,345,361,373.38/42,082
6. Step 6: Final answer
   x = 31,970.00