Finding the Fourth Proportional to 81,818.27, 112,920.72 and 68,368.22

Step by Step Solution

1. Step 1: Write the proportion equation
   81,818.27 : 112,920.72 = 68,368.22 : x
2. Step 2: Convert to fraction form
   81,818.27/112,920.72 = 68,368.22/x
3. Step 3: Cross multiply
   81,818.27x = 112,920.72 × 68,368.22
4. Step 4: Simplify right side
   81,818.27x = 7,720,188,627.52
5. Step 5: Solve for x
   x = 7,720,188,627.52/81,818.27
6. Step 6: Final answer
   x = 94,357.76