Finding the Fourth Proportional to 64,882.71, 89,538.21 and 38,019.87

Step by Step Solution

1. Step 1: Write the proportion equation
   64,882.71 : 89,538.21 = 38,019.87 : x
2. Step 2: Convert to fraction form
   64,882.71/89,538.21 = 38,019.87/x
3. Step 3: Cross multiply
   64,882.71x = 89,538.21 × 38,019.87
4. Step 4: Simplify right side
   64,882.71x = 3,404,231,104.23
5. Step 5: Solve for x
   x = 3,404,231,104.23/64,882.71
6. Step 6: Final answer
   x = 52,467.46