Finding the Fourth Proportional to 80,778.06, 121,158.50 and 21,619.71

Step by Step Solution

1. Step 1: Write the proportion equation
   80,778.06 : 121,158.50 = 21,619.71 : x
2. Step 2: Convert to fraction form
   80,778.06/121,158.50 = 21,619.71/x
3. Step 3: Cross multiply
   80,778.06x = 121,158.50 × 21,619.71
4. Step 4: Simplify right side
   80,778.06x = 2,619,411,525.94
5. Step 5: Solve for x
   x = 2,619,411,525.94/80,778.06
6. Step 6: Final answer
   x = 32,427.26