Finding the Fourth Proportional to 49,196.42, 67,878.98 and 28,775.31

Step by Step Solution

1. Step 1: Write the proportion equation
   49,196.42 : 67,878.98 = 28,775.31 : x
2. Step 2: Convert to fraction form
   49,196.42/67,878.98 = 28,775.31/x
3. Step 3: Cross multiply
   49,196.42x = 67,878.98 × 28,775.31
4. Step 4: Simplify right side
   49,196.42x = 1,953,238,594.22
5. Step 5: Solve for x
   x = 1,953,238,594.22/49,196.42
6. Step 6: Final answer
   x = 39,702.86