Finding the Fourth Proportional to 168,055.27, 231,913.29 and 91,574.89

Step by Step Solution

1. Step 1: Write the proportion equation
   168,055.27 : 231,913.29 = 91,574.89 : x
2. Step 2: Convert to fraction form
   168,055.27/231,913.29 = 91,574.89/x
3. Step 3: Cross multiply
   168,055.27x = 231,913.29 × 91,574.89
4. Step 4: Simplify right side
   168,055.27x = 21,237,434,021.29
5. Step 5: Solve for x
   x = 21,237,434,021.29/168,055.27
6. Step 6: Final answer
   x = 126,371.72