Finding the Fourth Proportional to 111,546.24, 167,428.71 and 81,879.99

Step by Step Solution

1. Step 1: Write the proportion equation
   111,546.24 : 167,428.71 = 81,879.99 : x
2. Step 2: Convert to fraction form
   111,546.24/167,428.71 = 81,879.99/x
3. Step 3: Cross multiply
   111,546.24x = 167,428.71 × 81,879.99
4. Step 4: Simplify right side
   111,546.24x = 13,709,061,100.51
5. Step 5: Solve for x
   x = 13,709,061,100.51/111,546.24
6. Step 6: Final answer
   x = 122,900.25