Finding the Fourth Proportional to 42,713.01, 64,080.05 and 17,745.57

Step by Step Solution

1. Step 1: Write the proportion equation
   42,713.01 : 64,080.05 = 17,745.57 : x
2. Step 2: Convert to fraction form
   42,713.01/64,080.05 = 17,745.57/x
3. Step 3: Cross multiply
   42,713.01x = 64,080.05 × 17,745.57
4. Step 4: Simplify right side
   42,713.01x = 1,137,136,924.15
5. Step 5: Solve for x
   x = 1,137,136,924.15/42,713.01
6. Step 6: Final answer
   x = 26,622.73