Finding the Fourth Proportional to 122,131.16, 168,446.22 and 81,832.04

Step by Step Solution

1. Step 1: Write the proportion equation
   122,131.16 : 168,446.22 = 81,832.04 : x
2. Step 2: Convert to fraction form
   122,131.16/168,446.22 = 81,832.04/x
3. Step 3: Cross multiply
   122,131.16x = 168,446.22 × 81,832.04
4. Step 4: Simplify right side
   122,131.16x = 13,784,297,812.89
5. Step 5: Solve for x
   x = 13,784,297,812.89/122,131.16
6. Step 6: Final answer
   x = 112,864.71