Finding the Fourth Proportional to 81,139.59, 111,971.84 and 45,329.49

Step by Step Solution

1. Step 1: Write the proportion equation
   81,139.59 : 111,971.84 = 45,329.49 : x
2. Step 2: Convert to fraction form
   81,139.59/111,971.84 = 45,329.49/x
3. Step 3: Cross multiply
   81,139.59x = 111,971.84 × 45,329.49
4. Step 4: Simplify right side
   81,139.59x = 5,075,626,174.91
5. Step 5: Solve for x
   x = 5,075,626,174.91/81,139.59
6. Step 6: Final answer
   x = 62,554.25