Finding the Fourth Proportional to 102,629.99, 141,085.69 and 88,236.77

Step by Step Solution

1. Step 1: Write the proportion equation
   102,629.99 : 141,085.69 = 88,236.77 : x
2. Step 2: Convert to fraction form
   102,629.99/141,085.69 = 88,236.77/x
3. Step 3: Cross multiply
   102,629.99x = 141,085.69 × 88,236.77
4. Step 4: Simplify right side
   102,629.99x = 12,448,945,578.82
5. Step 5: Solve for x
   x = 12,448,945,578.82/102,629.99
6. Step 6: Final answer
   x = 121,299.30