Finding the Fourth Proportional to 91,488.13, 137,205.86 and 31,514.18

Step by Step Solution

1. Step 1: Write the proportion equation
   91,488.13 : 137,205.86 = 31,514.18 : x
2. Step 2: Convert to fraction form
   91,488.13/137,205.86 = 31,514.18/x
3. Step 3: Cross multiply
   91,488.13x = 137,205.86 × 31,514.18
4. Step 4: Simplify right side
   91,488.13x = 4,323,930,590.89
5. Step 5: Solve for x
   x = 4,323,930,590.89/91,488.13
6. Step 6: Final answer
   x = 47,262.20