Finding the Fourth Proportional to 71,685.82, 107,493.90 and 21,756.88

Step by Step Solution

1. Step 1: Write the proportion equation
   71,685.82 : 107,493.90 = 21,756.88 : x
2. Step 2: Convert to fraction form
   71,685.82/107,493.90 = 21,756.88/x
3. Step 3: Cross multiply
   71,685.82x = 107,493.90 × 21,756.88
4. Step 4: Simplify right side
   71,685.82x = 2,338,731,883.03
5. Step 5: Solve for x
   x = 2,338,731,883.03/71,685.82
6. Step 6: Final answer
   x = 32,624.75