Finding the Fourth Proportional to 87,669.81, 131,495.49 and 30,742.89

Step by Step Solution

1. Step 1: Write the proportion equation
   87,669.81 : 131,495.49 = 30,742.89 : x
2. Step 2: Convert to fraction form
   87,669.81/131,495.49 = 30,742.89/x
3. Step 3: Cross multiply
   87,669.81x = 131,495.49 × 30,742.89
4. Step 4: Simplify right side
   87,669.81x = 4,042,550,727.09
5. Step 5: Solve for x
   x = 4,042,550,727.09/87,669.81
6. Step 6: Final answer
   x = 46,111.09