Finding the Fourth Proportional to 52,698.42, 72,725.31 and 28,826.64

Step by Step Solution

1. Step 1: Write the proportion equation
   52,698.42 : 72,725.31 = 28,826.64 : x
2. Step 2: Convert to fraction form
   52,698.42/72,725.31 = 28,826.64/x
3. Step 3: Cross multiply
   52,698.42x = 72,725.31 × 28,826.64
4. Step 4: Simplify right side
   52,698.42x = 2,096,426,330.26
5. Step 5: Solve for x
   x = 2,096,426,330.26/52,698.42
6. Step 6: Final answer
   x = 39,781.58