Finding the Fourth Proportional to 81,853, 122,798.55 and 25,690.03

Step by Step Solution

1. Step 1: Write the proportion equation
   81,853 : 122,798.55 = 25,690.03 : x
2. Step 2: Convert to fraction form
   81,853/122,798.55 = 25,690.03/x
3. Step 3: Cross multiply
   81,853x = 122,798.55 × 25,690.03
4. Step 4: Simplify right side
   81,853x = 3,154,698,433.46
5. Step 5: Solve for x
   x = 3,154,698,433.46/81,853
6. Step 6: Final answer
   x = 38,541.02