Finding the Fourth Proportional to 67,936.50, 101,916.27 and 21,180.06

Step by Step Solution

1. Step 1: Write the proportion equation
   67,936.50 : 101,916.27 = 21,180.06 : x
2. Step 2: Convert to fraction form
   67,936.50/101,916.27 = 21,180.06/x
3. Step 3: Cross multiply
   67,936.50x = 101,916.27 × 21,180.06
4. Step 4: Simplify right side
   67,936.50x = 2,158,592,713.58
5. Step 5: Solve for x
   x = 2,158,592,713.58/67,936.50
6. Step 6: Final answer
   x = 31,773.68