Finding the Fourth Proportional to 42,668.01, 64,014.27 and 13,090.17

Step by Step Solution

1. Step 1: Write the proportion equation
   42,668.01 : 64,014.27 = 13,090.17 : x
2. Step 2: Convert to fraction form
   42,668.01/64,014.27 = 13,090.17/x
3. Step 3: Cross multiply
   42,668.01x = 64,014.27 × 13,090.17
4. Step 4: Simplify right side
   42,668.01x = 837,957,676.73
5. Step 5: Solve for x
   x = 837,957,676.73/42,668.01
6. Step 6: Final answer
   x = 19,639.01