Finding the Fourth Proportional to 53,978.52, 80,970.21 and 16,535.87

Step by Step Solution

1. Step 1: Write the proportion equation
   53,978.52 : 80,970.21 = 16,535.87 : x
2. Step 2: Convert to fraction form
   53,978.52/80,970.21 = 16,535.87/x
3. Step 3: Cross multiply
   53,978.52x = 80,970.21 × 16,535.87
4. Step 4: Simplify right side
   53,978.52x = 1,338,912,866.43
5. Step 5: Solve for x
   x = 1,338,912,866.43/53,978.52
6. Step 6: Final answer
   x = 24,804.55