Finding the Fourth Proportional to 81,087.50, 111,887.40 and 45,271.76

Step by Step Solution

1. Step 1: Write the proportion equation
   81,087.50 : 111,887.40 = 45,271.76 : x
2. Step 2: Convert to fraction form
   81,087.50/111,887.40 = 45,271.76/x
3. Step 3: Cross multiply
   81,087.50x = 111,887.40 × 45,271.76
4. Step 4: Simplify right side
   81,087.50x = 5,065,339,519.82
5. Step 5: Solve for x
   x = 5,065,339,519.82/81,087.50
6. Step 6: Final answer
   x = 62,467.58