Finding the Fourth Proportional to 88,216.61, 132,072.19 and 82,629.77

Step by Step Solution

1. Step 1: Write the proportion equation
   88,216.61 : 132,072.19 = 82,629.77 : x
2. Step 2: Convert to fraction form
   88,216.61/132,072.19 = 82,629.77/x
3. Step 3: Cross multiply
   88,216.61x = 132,072.19 × 82,629.77
4. Step 4: Simplify right side
   88,216.61x = 10,913,093,816.16
5. Step 5: Solve for x
   x = 10,913,093,816.16/88,216.61
6. Step 6: Final answer
   x = 123,707.93