Finding the Fourth Proportional to 112,838.40, 155,733.57 and 65,082.42

Step by Step Solution

1. Step 1: Write the proportion equation
   112,838.40 : 155,733.57 = 65,082.42 : x
2. Step 2: Convert to fraction form
   112,838.40/155,733.57 = 65,082.42/x
3. Step 3: Cross multiply
   112,838.40x = 155,733.57 × 65,082.42
4. Step 4: Simplify right side
   112,838.40x = 10,135,517,610.84
5. Step 5: Solve for x
   x = 10,135,517,610.84/112,838.40
6. Step 6: Final answer
   x = 89,823.30