Finding the Fourth Proportional to 82,115.09, 123,134.35 and 42,661.61

Step by Step Solution

1. Step 1: Write the proportion equation
   82,115.09 : 123,134.35 = 42,661.61 : x
2. Step 2: Convert to fraction form
   82,115.09/123,134.35 = 42,661.61/x
3. Step 3: Cross multiply
   82,115.09x = 123,134.35 × 42,661.61
4. Step 4: Simplify right side
   82,115.09x = 5,253,109,202.81
5. Step 5: Solve for x
   x = 5,253,109,202.81/82,115.09
6. Step 6: Final answer
   x = 63,972.52