Finding the Fourth Proportional to 82,429.80, 123,653.76 and 26,256.72

Step by Step Solution

1. Step 1: Write the proportion equation
   82,429.80 : 123,653.76 = 26,256.72 : x
2. Step 2: Convert to fraction form
   82,429.80/123,653.76 = 26,256.72/x
3. Step 3: Cross multiply
   82,429.80x = 123,653.76 × 26,256.72
4. Step 4: Simplify right side
   82,429.80x = 3,246,742,153.27
5. Step 5: Solve for x
   x = 3,246,742,153.27/82,429.80
6. Step 6: Final answer
   x = 39,387.97