Finding the Fourth Proportional to 186,664.29, 280,086.54 and 91,843.05

Step by Step Solution

1. Step 1: Write the proportion equation
   186,664.29 : 280,086.54 = 91,843.05 : x
2. Step 2: Convert to fraction form
   186,664.29/280,086.54 = 91,843.05/x
3. Step 3: Cross multiply
   186,664.29x = 280,086.54 × 91,843.05
4. Step 4: Simplify right side
   186,664.29x = 25,724,002,097.55
5. Step 5: Solve for x
   x = 25,724,002,097.55/186,664.29
6. Step 6: Final answer
   x = 137,808.91