Finding the Fourth Proportional to 112,840.40, 155,736.33 and 65,084.42

Step by Step Solution

1. Step 1: Write the proportion equation
   112,840.40 : 155,736.33 = 65,084.42 : x
2. Step 2: Convert to fraction form
   112,840.40/155,736.33 = 65,084.42/x
3. Step 3: Cross multiply
   112,840.40x = 155,736.33 × 65,084.42
4. Step 4: Simplify right side
   112,840.40x = 10,136,008,710.98
5. Step 5: Solve for x
   x = 10,136,008,710.98/112,840.40
6. Step 6: Final answer
   x = 89,826.06