Finding the Fourth Proportional to 168,071.51, 231,938.69 and 91,590.58

Step by Step Solution

1. Step 1: Write the proportion equation
   168,071.51 : 231,938.69 = 91,590.58 : x
2. Step 2: Convert to fraction form
   168,071.51/231,938.69 = 91,590.58/x
3. Step 3: Cross multiply
   168,071.51x = 231,938.69 × 91,590.58
4. Step 4: Simplify right side
   168,071.51x = 21,243,399,141.54
5. Step 5: Solve for x
   x = 21,243,399,141.54/168,071.51
6. Step 6: Final answer
   x = 126,395.00