Finding the Fourth Proportional to 81,722.07, 112,770.38 and 45,918.05

Step by Step Solution

1. Step 1: Write the proportion equation
   81,722.07 : 112,770.38 = 45,918.05 : x
2. Step 2: Convert to fraction form
   81,722.07/112,770.38 = 45,918.05/x
3. Step 3: Cross multiply
   81,722.07x = 112,770.38 × 45,918.05
4. Step 4: Simplify right side
   81,722.07x = 5,178,195,498.30
5. Step 5: Solve for x
   x = 5,178,195,498.30/81,722.07
6. Step 6: Final answer
   x = 63,363.49