Finding the Fourth Proportional to 81,266.27, 121,911.10 and 25,111.30

Step by Step Solution

1. Step 1: Write the proportion equation
   81,266.27 : 121,911.10 = 25,111.30 : x
2. Step 2: Convert to fraction form
   81,266.27/121,911.10 = 25,111.30/x
3. Step 3: Cross multiply
   81,266.27x = 121,911.10 × 25,111.30
4. Step 4: Simplify right side
   81,266.27x = 3,061,345,837.87
5. Step 5: Solve for x
   x = 3,061,345,837.87/81,266.27
6. Step 6: Final answer
   x = 37,670.56