Finding the Fourth Proportional to 115,142.01, 172,502.56 and 83,473.54

Step by Step Solution

1. Step 1: Write the proportion equation
   115,142.01 : 172,502.56 = 83,473.54 : x
2. Step 2: Convert to fraction form
   115,142.01/172,502.56 = 83,473.54/x
3. Step 3: Cross multiply
   115,142.01x = 172,502.56 × 83,473.54
4. Step 4: Simplify right side
   115,142.01x = 14,399,399,015.35
5. Step 5: Solve for x
   x = 14,399,399,015.35/115,142.01
6. Step 6: Final answer
   x = 125,057.74