Finding the Fourth Proportional to 302,086.10, 453,099.78 and 91,725.86

Step by Step Solution

1. Step 1: Write the proportion equation
   302,086.10 : 453,099.78 = 91,725.86 : x
2. Step 2: Convert to fraction form
   302,086.10/453,099.78 = 91,725.86/x
3. Step 3: Cross multiply
   302,086.10x = 453,099.78 × 91,725.86
4. Step 4: Simplify right side
   302,086.10x = 41,560,966,986.31
5. Step 5: Solve for x
   x = 41,560,966,986.31/302,086.10
6. Step 6: Final answer
   x = 137,579.87