Finding the Fourth Proportional to 67,805.10, 101,678.49 and 21,061.62

Step by Step Solution

1. Step 1: Write the proportion equation
   67,805.10 : 101,678.49 = 21,061.62 : x
2. Step 2: Convert to fraction form
   67,805.10/101,678.49 = 21,061.62/x
3. Step 3: Cross multiply
   67,805.10x = 101,678.49 × 21,061.62
4. Step 4: Simplify right side
   67,805.10x = 2,141,513,718.55
5. Step 5: Solve for x
   x = 2,141,513,718.55/67,805.10
6. Step 6: Final answer
   x = 31,583.37