Finding the Fourth Proportional to 42,770.59, 64,121.22 and 17,829.34

Step by Step Solution

1. Step 1: Write the proportion equation
   42,770.59 : 64,121.22 = 17,829.34 : x
2. Step 2: Convert to fraction form
   42,770.59/64,121.22 = 17,829.34/x
3. Step 3: Cross multiply
   42,770.59x = 64,121.22 × 17,829.34
4. Step 4: Simplify right side
   42,770.59x = 1,143,238,872.29
5. Step 5: Solve for x
   x = 1,143,238,872.29/42,770.59
6. Step 6: Final answer
   x = 26,729.56