Finding the Fourth Proportional to 58,678.75, 80,976.72 and 31,821.25

Step by Step Solution

1. Step 1: Write the proportion equation
   58,678.75 : 80,976.72 = 31,821.25 : x
2. Step 2: Convert to fraction form
   58,678.75/80,976.72 = 31,821.25/x
3. Step 3: Cross multiply
   58,678.75x = 80,976.72 × 31,821.25
4. Step 4: Simplify right side
   58,678.75x = 2,576,780,451.30
5. Step 5: Solve for x
   x = 2,576,780,451.30/58,678.75
6. Step 6: Final answer
   x = 43,913.35