Finding the Fourth Proportional to 91,689.27, 137,581.29 and 39,084.63

Step by Step Solution

1. Step 1: Write the proportion equation
   91,689.27 : 137,581.29 = 39,084.63 : x
2. Step 2: Convert to fraction form
   91,689.27/137,581.29 = 39,084.63/x
3. Step 3: Cross multiply
   91,689.27x = 137,581.29 × 39,084.63
4. Step 4: Simplify right side
   91,689.27x = 5,377,313,814.57
5. Step 5: Solve for x
   x = 5,377,313,814.57/91,689.27
6. Step 6: Final answer
   x = 58,647.14