Finding the Fourth Proportional to 58,662.78, 80,911.62 and 38,512.31

Step by Step Solution

1. Step 1: Write the proportion equation
   58,662.78 : 80,911.62 = 38,512.31 : x
2. Step 2: Convert to fraction form
   58,662.78/80,911.62 = 38,512.31/x
3. Step 3: Cross multiply
   58,662.78x = 80,911.62 × 38,512.31
4. Step 4: Simplify right side
   58,662.78x = 3,116,092,987.48
5. Step 5: Solve for x
   x = 3,116,092,987.48/58,662.78
6. Step 6: Final answer
   x = 53,118.74