Finding the Fourth Proportional to 111,468.40, 167,196.24 and 81,513.28

Step by Step Solution

1. Step 1: Write the proportion equation
   111,468.40 : 167,196.24 = 81,513.28 : x
2. Step 2: Convert to fraction form
   111,468.40/167,196.24 = 81,513.28/x
3. Step 3: Cross multiply
   111,468.40x = 167,196.24 × 81,513.28
4. Step 4: Simplify right side
   111,468.40x = 13,628,713,926.07
5. Step 5: Solve for x
   x = 13,628,713,926.07/111,468.40
6. Step 6: Final answer
   x = 122,265.27