Finding the Fourth Proportional to 42,743.90, 64,117.58 and 16,087.21

Step by Step Solution

1. Step 1: Write the proportion equation
   42,743.90 : 64,117.58 = 16,087.21 : x
2. Step 2: Convert to fraction form
   42,743.90/64,117.58 = 16,087.21/x
3. Step 3: Cross multiply
   42,743.90x = 64,117.58 × 16,087.21
4. Step 4: Simplify right side
   42,743.90x = 1,031,472,733.42
5. Step 5: Solve for x
   x = 1,031,472,733.42/42,743.90
6. Step 6: Final answer
   x = 24,131.46