Finding the Fourth Proportional to 83,891.80, 115,768.56 and 45,649.72

Step by Step Solution

1. Step 1: Write the proportion equation
   83,891.80 : 115,768.56 = 45,649.72 : x
2. Step 2: Convert to fraction form
   83,891.80/115,768.56 = 45,649.72/x
3. Step 3: Cross multiply
   83,891.80x = 115,768.56 × 45,649.72
4. Step 4: Simplify right side
   83,891.80x = 5,284,802,348.80
5. Step 5: Solve for x
   x = 5,284,802,348.80/83,891.80
6. Step 6: Final answer
   x = 62,995.46