Finding the Fourth Proportional to 112,942.88, 155,836.08 and 65,186.12

Step by Step Solution

1. Step 1: Write the proportion equation
   112,942.88 : 155,836.08 = 65,186.12 : x
2. Step 2: Convert to fraction form
   112,942.88/155,836.08 = 65,186.12/x
3. Step 3: Cross multiply
   112,942.88x = 155,836.08 × 65,186.12
4. Step 4: Simplify right side
   112,942.88x = 10,158,349,411.21
5. Step 5: Solve for x
   x = 10,158,349,411.21/112,942.88
6. Step 6: Final answer
   x = 89,942.36