Finding the Fourth Proportional to 91,118.22, 136,678.23 and 31,955.31

Step by Step Solution

1. Step 1: Write the proportion equation
   91,118.22 : 136,678.23 = 31,955.31 : x
2. Step 2: Convert to fraction form
   91,118.22/136,678.23 = 31,955.31/x
3. Step 3: Cross multiply
   91,118.22x = 136,678.23 × 31,955.31
4. Step 4: Simplify right side
   91,118.22x = 4,367,595,209.90
5. Step 5: Solve for x
   x = 4,367,595,209.90/91,118.22
6. Step 6: Final answer
   x = 47,933.28