Finding the Fourth Proportional to 55,783.82, 76,991.57 and 31,586.19

Step by Step Solution

1. Step 1: Write the proportion equation
   55,783.82 : 76,991.57 = 31,586.19 : x
2. Step 2: Convert to fraction form
   55,783.82/76,991.57 = 31,586.19/x
3. Step 3: Cross multiply
   55,783.82x = 76,991.57 × 31,586.19
4. Step 4: Simplify right side
   55,783.82x = 2,431,870,200.49
5. Step 5: Solve for x
   x = 2,431,870,200.49/55,783.82
6. Step 6: Final answer
   x = 43,594.55