Finding the Fourth Proportional to 168,019.51, 231,866.23 and 91,538.38

Step by Step Solution

1. Step 1: Write the proportion equation
   168,019.51 : 231,866.23 = 91,538.38 : x
2. Step 2: Convert to fraction form
   168,019.51/231,866.23 = 91,538.38/x
3. Step 3: Cross multiply
   168,019.51x = 231,866.23 × 91,538.38
4. Step 4: Simplify right side
   168,019.51x = 21,224,657,453.88
5. Step 5: Solve for x
   x = 21,224,657,453.88/168,019.51
6. Step 6: Final answer
   x = 126,322.58