Finding the Fourth Proportional to 90,180.12, 135,268.82 and 31,016.31

Step by Step Solution

1. Step 1: Write the proportion equation
   90,180.12 : 135,268.82 = 31,016.31 : x
2. Step 2: Convert to fraction form
   90,180.12/135,268.82 = 31,016.31/x
3. Step 3: Cross multiply
   90,180.12x = 135,268.82 × 31,016.31
4. Step 4: Simplify right side
   90,180.12x = 4,195,539,654.45
5. Step 5: Solve for x
   x = 4,195,539,654.45/90,180.12
6. Step 6: Final answer
   x = 46,524.00