Finding the Fourth Proportional to 61,098.81, 91,662.56 and 18,976.71

Step by Step Solution

1. Step 1: Write the proportion equation
   61,098.81 : 91,662.56 = 18,976.71 : x
2. Step 2: Convert to fraction form
   61,098.81/91,662.56 = 18,976.71/x
3. Step 3: Cross multiply
   61,098.81x = 91,662.56 × 18,976.71
4. Step 4: Simplify right side
   61,098.81x = 1,739,453,724.09
5. Step 5: Solve for x
   x = 1,739,453,724.09/61,098.81
6. Step 6: Final answer
   x = 28,469.52