Finding the Fourth Proportional to 81,116.16, 111,936.96 and 45,306

Step by Step Solution

1. Step 1: Write the proportion equation
   81,116.16 : 111,936.96 = 45,306 : x
2. Step 2: Convert to fraction form
   81,116.16/111,936.96 = 45,306/x
3. Step 3: Cross multiply
   81,116.16x = 111,936.96 × 45,306
4. Step 4: Simplify right side
   81,116.16x = 5,071,415,909.76
5. Step 5: Solve for x
   x = 5,071,415,909.76/81,116.16
6. Step 6: Final answer
   x = 62,520.41