Finding the Fourth Proportional to 91,587.91, 137,391.18 and 31,608.58

Step by Step Solution

1. Step 1: Write the proportion equation
   91,587.91 : 137,391.18 = 31,608.58 : x
2. Step 2: Convert to fraction form
   91,587.91/137,391.18 = 31,608.58/x
3. Step 3: Cross multiply
   91,587.91x = 137,391.18 × 31,608.58
4. Step 4: Simplify right side
   91,587.91x = 4,342,740,046.83
5. Step 5: Solve for x
   x = 4,342,740,046.83/91,587.91
6. Step 6: Final answer
   x = 47,416.09