Finding the Fourth Proportional to 81,744.03, 122,549.22 and 42,312.42

Step by Step Solution

1. Step 1: Write the proportion equation
   81,744.03 : 122,549.22 = 42,312.42 : x
2. Step 2: Convert to fraction form
   81,744.03/122,549.22 = 42,312.42/x
3. Step 3: Cross multiply
   81,744.03x = 122,549.22 × 42,312.42
4. Step 4: Simplify right side
   81,744.03x = 5,185,354,067.31
5. Step 5: Solve for x
   x = 5,185,354,067.31/81,744.03
6. Step 6: Final answer
   x = 63,434.04