Finding the Fourth Proportional to 81,553.32, 122,300.64 and 28,230.82

Step by Step Solution

1. Step 1: Write the proportion equation
   81,553.32 : 122,300.64 = 28,230.82 : x
2. Step 2: Convert to fraction form
   81,553.32/122,300.64 = 28,230.82/x
3. Step 3: Cross multiply
   81,553.32x = 122,300.64 × 28,230.82
4. Step 4: Simplify right side
   81,553.32x = 3,452,647,353.72
5. Step 5: Solve for x
   x = 3,452,647,353.72/81,553.32
6. Step 6: Final answer
   x = 42,336.07