Finding the Fourth Proportional to 88,816.96, 122,448 and 86,065.12

Step by Step Solution

1. Step 1: Write the proportion equation
   88,816.96 : 122,448 = 86,065.12 : x
2. Step 2: Convert to fraction form
   88,816.96/122,448 = 86,065.12/x
3. Step 3: Cross multiply
   88,816.96x = 122,448 × 86,065.12
4. Step 4: Simplify right side
   88,816.96x = 10,538,501,813.76
5. Step 5: Solve for x
   x = 10,538,501,813.76/88,816.96
6. Step 6: Final answer
   x = 118,654.16