Finding the Fourth Proportional to 269,516.70, 404,311.05 and 91,979.10

Step by Step Solution

1. Step 1: Write the proportion equation
   269,516.70 : 404,311.05 = 91,979.10 : x
2. Step 2: Convert to fraction form
   269,516.70/404,311.05 = 91,979.10/x
3. Step 3: Cross multiply
   269,516.70x = 404,311.05 × 91,979.10
4. Step 4: Simplify right side
   269,516.70x = 37,188,166,499.06
5. Step 5: Solve for x
   x = 37,188,166,499.06/269,516.70
6. Step 6: Final answer
   x = 137,980.94