Finding the Fourth Proportional to 204,171.90, 306,152.38 and 91,756.05

Step by Step Solution

1. Step 1: Write the proportion equation
   204,171.90 : 306,152.38 = 91,756.05 : x
2. Step 2: Convert to fraction form
   204,171.90/306,152.38 = 91,756.05/x
3. Step 3: Cross multiply
   204,171.90x = 306,152.38 × 91,756.05
4. Step 4: Simplify right side
   204,171.90x = 28,091,333,086.90
5. Step 5: Solve for x
   x = 28,091,333,086.90/204,171.90
6. Step 6: Final answer
   x = 137,586.68