Finding the Fourth Proportional to 91,043.88, 136,609.14 and 41,139.24

Step by Step Solution

1. Step 1: Write the proportion equation
   91,043.88 : 136,609.14 = 41,139.24 : x
2. Step 2: Convert to fraction form
   91,043.88/136,609.14 = 41,139.24/x
3. Step 3: Cross multiply
   91,043.88x = 136,609.14 × 41,139.24
4. Step 4: Simplify right side
   91,043.88x = 5,619,996,196.65
5. Step 5: Solve for x
   x = 5,619,996,196.65/91,043.88
6. Step 6: Final answer
   x = 61,728.43