Finding the Fourth Proportional to 81,571.86, 112,573.80 and 45,765

Step by Step Solution

1. Step 1: Write the proportion equation
   81,571.86 : 112,573.80 = 45,765 : x
2. Step 2: Convert to fraction form
   81,571.86/112,573.80 = 45,765/x
3. Step 3: Cross multiply
   81,571.86x = 112,573.80 × 45,765
4. Step 4: Simplify right side
   81,571.86x = 5,151,939,957
5. Step 5: Solve for x
   x = 5,151,939,957/81,571.86
6. Step 6: Final answer
   x = 63,158.30