Finding the Fourth Proportional to 102,635.43, 153,738.54 and 82,536.18

Step by Step Solution

1. Step 1: Write the proportion equation
   102,635.43 : 153,738.54 = 82,536.18 : x
2. Step 2: Convert to fraction form
   102,635.43/153,738.54 = 82,536.18/x
3. Step 3: Cross multiply
   102,635.43x = 153,738.54 × 82,536.18
4. Step 4: Simplify right side
   102,635.43x = 12,688,991,810.38
5. Step 5: Solve for x
   x = 12,688,991,810.38/102,635.43
6. Step 6: Final answer
   x = 123,631.69