Finding the Fourth Proportional to 49,870.76, 68,820.44 and 28,649.57

Step by Step Solution

1. Step 1: Write the proportion equation
   49,870.76 : 68,820.44 = 28,649.57 : x
2. Step 2: Convert to fraction form
   49,870.76/68,820.44 = 28,649.57/x
3. Step 3: Cross multiply
   49,870.76x = 68,820.44 × 28,649.57
4. Step 4: Simplify right side
   49,870.76x = 1,971,675,525.86
5. Step 5: Solve for x
   x = 1,971,675,525.86/49,870.76
6. Step 6: Final answer
   x = 39,535.71