Finding the Fourth Proportional to 67,820.24, 101,743.32 and 21,071.36

Step by Step Solution

1. Step 1: Write the proportion equation
   67,820.24 : 101,743.32 = 21,071.36 : x
2. Step 2: Convert to fraction form
   67,820.24/101,743.32 = 21,071.36/x
3. Step 3: Cross multiply
   67,820.24x = 101,743.32 × 21,071.36
4. Step 4: Simplify right side
   67,820.24x = 2,143,870,123.32
5. Step 5: Solve for x
   x = 2,143,870,123.32/67,820.24
6. Step 6: Final answer
   x = 31,611.07