Finding the Fourth Proportional to 49,789.42, 68,708.82 and 28,572.02

Step by Step Solution

1. Step 1: Write the proportion equation
   49,789.42 : 68,708.82 = 28,572.02 : x
2. Step 2: Convert to fraction form
   49,789.42/68,708.82 = 28,572.02/x
3. Step 3: Cross multiply
   49,789.42x = 68,708.82 × 28,572.02
4. Step 4: Simplify right side
   49,789.42x = 1,963,149,779.22
5. Step 5: Solve for x
   x = 1,963,149,779.22/49,789.42
6. Step 6: Final answer
   x = 39,429.05