Finding the Fourth Proportional to 51,667.82, 71,299.16 and 28,699.13

Step by Step Solution

1. Step 1: Write the proportion equation
   51,667.82 : 71,299.16 = 28,699.13 : x
2. Step 2: Convert to fraction form
   51,667.82/71,299.16 = 28,699.13/x
3. Step 3: Cross multiply
   51,667.82x = 71,299.16 × 28,699.13
4. Step 4: Simplify right side
   51,667.82x = 2,046,223,361.74
5. Step 5: Solve for x
   x = 2,046,223,361.74/51,667.82
6. Step 6: Final answer
   x = 39,603.44