Finding the Fourth Proportional to 53,823.42, 80,581.50 and 42,745.86

Step by Step Solution

1. Step 1: Write the proportion equation
   53,823.42 : 80,581.50 = 42,745.86 : x
2. Step 2: Convert to fraction form
   53,823.42/80,581.50 = 42,745.86/x
3. Step 3: Cross multiply
   53,823.42x = 80,581.50 × 42,745.86
4. Step 4: Simplify right side
   53,823.42x = 3,444,525,517.59
5. Step 5: Solve for x
   x = 3,444,525,517.59/53,823.42
6. Step 6: Final answer
   x = 63,996.78