Finding the Fourth Proportional to 51,164.94, 70,588.86 and 31,007.28

Step by Step Solution

1. Step 1: Write the proportion equation
   51,164.94 : 70,588.86 = 31,007.28 : x
2. Step 2: Convert to fraction form
   51,164.94/70,588.86 = 31,007.28/x
3. Step 3: Cross multiply
   51,164.94x = 70,588.86 × 31,007.28
4. Step 4: Simplify right side
   51,164.94x = 2,188,768,546.90
5. Step 5: Solve for x
   x = 2,188,768,546.90/51,164.94
6. Step 6: Final answer
   x = 42,778.68