Finding the Fourth Proportional to 81,491.53, 122,174.42 and 30,889.82

Step by Step Solution

1. Step 1: Write the proportion equation
   81,491.53 : 122,174.42 = 30,889.82 : x
2. Step 2: Convert to fraction form
   81,491.53/122,174.42 = 30,889.82/x
3. Step 3: Cross multiply
   81,491.53x = 122,174.42 × 30,889.82
4. Step 4: Simplify right side
   81,491.53x = 3,773,945,306.16
5. Step 5: Solve for x
   x = 3,773,945,306.16/81,491.53
6. Step 6: Final answer
   x = 46,310.89