Finding the Fourth Proportional to 91,488.38, 137,206.24 and 31,514.43

Step by Step Solution

1. Step 1: Write the proportion equation
   91,488.38 : 137,206.24 = 31,514.43 : x
2. Step 2: Convert to fraction form
   91,488.38/137,206.24 = 31,514.43/x
3. Step 3: Cross multiply
   91,488.38x = 137,206.24 × 31,514.43
4. Step 4: Simplify right side
   91,488.38x = 4,323,976,710.27
5. Step 5: Solve for x
   x = 4,323,976,710.27/91,488.38
6. Step 6: Final answer
   x = 47,262.58