Finding the Fourth Proportional to 118,393.17, 163,321.89 and 80,154.09

Step by Step Solution

1. Step 1: Write the proportion equation
   118,393.17 : 163,321.89 = 80,154.09 : x
2. Step 2: Convert to fraction form
   118,393.17/163,321.89 = 80,154.09/x
3. Step 3: Cross multiply
   118,393.17x = 163,321.89 × 80,154.09
4. Step 4: Simplify right side
   118,393.17x = 13,090,917,470.03
5. Step 5: Solve for x
   x = 13,090,917,470.03/118,393.17
6. Step 6: Final answer
   x = 110,571.56