Finding the Fourth Proportional to 81,834.96, 112,442.82 and 65,038.80

Step by Step Solution

1. Step 1: Write the proportion equation
   81,834.96 : 112,442.82 = 65,038.80 : x
2. Step 2: Convert to fraction form
   81,834.96/112,442.82 = 65,038.80/x
3. Step 3: Cross multiply
   81,834.96x = 112,442.82 × 65,038.80
4. Step 4: Simplify right side
   81,834.96x = 7,313,146,081.42
5. Step 5: Solve for x
   x = 7,313,146,081.42/81,834.96
6. Step 6: Final answer
   x = 89,364.57