Finding the Fourth Proportional to 136,196.79, 187,874.76 and 81,735.03

Step by Step Solution

1. Step 1: Write the proportion equation
   136,196.79 : 187,874.76 = 81,735.03 : x
2. Step 2: Convert to fraction form
   136,196.79/187,874.76 = 81,735.03/x
3. Step 3: Cross multiply
   136,196.79x = 187,874.76 × 81,735.03
4. Step 4: Simplify right side
   136,196.79x = 15,355,949,144.84
5. Step 5: Solve for x
   x = 15,355,949,144.84/136,196.79
6. Step 6: Final answer
   x = 112,748.25