Finding the Fourth Proportional to 70,531.42, 105,772.52 and 31,067

Step by Step Solution

1. Step 1: Write the proportion equation
   70,531.42 : 105,772.52 = 31,067 : x
2. Step 2: Convert to fraction form
   70,531.42/105,772.52 = 31,067/x
3. Step 3: Cross multiply
   70,531.42x = 105,772.52 × 31,067
4. Step 4: Simplify right side
   70,531.42x = 3,286,034,878.84
5. Step 5: Solve for x
   x = 3,286,034,878.84/70,531.42
6. Step 6: Final answer
   x = 46,589.66