Finding the Fourth Proportional to 67,817, 101,725.52 and 21,069.88

Step by Step Solution

1. Step 1: Write the proportion equation
   67,817 : 101,725.52 = 21,069.88 : x
2. Step 2: Convert to fraction form
   67,817/101,725.52 = 21,069.88/x
3. Step 3: Cross multiply
   67,817x = 101,725.52 × 21,069.88
4. Step 4: Simplify right side
   67,817x = 2,143,344,499.34
5. Step 5: Solve for x
   x = 2,143,344,499.34/67,817
6. Step 6: Final answer
   x = 31,604.83