Finding the Fourth Proportional to 91,131.58, 136,696.31 and 31,159.49

Step by Step Solution

1. Step 1: Write the proportion equation
   91,131.58 : 136,696.31 = 31,159.49 : x
2. Step 2: Convert to fraction form
   91,131.58/136,696.31 = 31,159.49/x
3. Step 3: Cross multiply
   91,131.58x = 136,696.31 × 31,159.49
4. Step 4: Simplify right side
   91,131.58x = 4,259,386,582.05
5. Step 5: Solve for x
   x = 4,259,386,582.05/91,131.58
6. Step 6: Final answer
   x = 46,738.86