Finding the Fourth Proportional to 80,991.71, 111,768.24 and 45,181.69

Step by Step Solution

1. Step 1: Write the proportion equation
   80,991.71 : 111,768.24 = 45,181.69 : x
2. Step 2: Convert to fraction form
   80,991.71/111,768.24 = 45,181.69/x
3. Step 3: Cross multiply
   80,991.71x = 111,768.24 × 45,181.69
4. Step 4: Simplify right side
   80,991.71x = 5,049,877,971.53
5. Step 5: Solve for x
   x = 5,049,877,971.53/80,991.71
6. Step 6: Final answer
   x = 62,350.56