Finding the Fourth Proportional to 81,085.12, 111,897.42 and 45,275.11

Step by Step Solution

1. Step 1: Write the proportion equation
   81,085.12 : 111,897.42 = 45,275.11 : x
2. Step 2: Convert to fraction form
   81,085.12/111,897.42 = 45,275.11/x
3. Step 3: Cross multiply
   81,085.12x = 111,897.42 × 45,275.11
4. Step 4: Simplify right side
   81,085.12x = 5,066,167,999.22
5. Step 5: Solve for x
   x = 5,066,167,999.22/81,085.12
6. Step 6: Final answer
   x = 62,479.63