Finding the Fourth Proportional to 67,765.01, 101,646.50 and 21,017.88

Step by Step Solution

1. Step 1: Write the proportion equation
   67,765.01 : 101,646.50 = 21,017.88 : x
2. Step 2: Convert to fraction form
   67,765.01/101,646.50 = 21,017.88/x
3. Step 3: Cross multiply
   67,765.01x = 101,646.50 × 21,017.88
4. Step 4: Simplify right side
   67,765.01x = 2,136,393,834.33
5. Step 5: Solve for x
   x = 2,136,393,834.33/67,765.01
6. Step 6: Final answer
   x = 31,526.51