Finding the Fourth Proportional to 225,162.05, 337,658.27 and 91,971.09

Step by Step Solution

1. Step 1: Write the proportion equation
   225,162.05 : 337,658.27 = 91,971.09 : x
2. Step 2: Convert to fraction form
   225,162.05/337,658.27 = 91,971.09/x
3. Step 3: Cross multiply
   225,162.05x = 337,658.27 × 91,971.09
4. Step 4: Simplify right side
   225,162.05x = 31,054,798,679.56
5. Step 5: Solve for x
   x = 31,054,798,679.56/225,162.05
6. Step 6: Final answer
   x = 137,922.00