Finding the Fourth Proportional to 139,040.28, 208,399.23 and 64,002.96

Step by Step Solution

1. Step 1: Write the proportion equation
   139,040.28 : 208,399.23 = 64,002.96 : x
2. Step 2: Convert to fraction form
   139,040.28/208,399.23 = 64,002.96/x
3. Step 3: Cross multiply
   139,040.28x = 208,399.23 × 64,002.96
4. Step 4: Simplify right side
   139,040.28x = 13,338,167,581.72
5. Step 5: Solve for x
   x = 13,338,167,581.72/139,040.28
6. Step 6: Final answer
   x = 95,930.24