Finding the Fourth Proportional to 231,217.34, 347,022.83 and 91,074.38

Step by Step Solution

1. Step 1: Write the proportion equation
   231,217.34 : 347,022.83 = 91,074.38 : x
2. Step 2: Convert to fraction form
   231,217.34/347,022.83 = 91,074.38/x
3. Step 3: Cross multiply
   231,217.34x = 347,022.83 × 91,074.38
4. Step 4: Simplify right side
   231,217.34x = 31,604,887,580.67
5. Step 5: Solve for x
   x = 31,604,887,580.67/231,217.34
6. Step 6: Final answer
   x = 136,689.09