Finding the Fourth Proportional to 84,081.93, 126,119.25 and 20,900.72

Step by Step Solution

1. Step 1: Write the proportion equation
   84,081.93 : 126,119.25 = 20,900.72 : x
2. Step 2: Convert to fraction form
   84,081.93/126,119.25 = 20,900.72/x
3. Step 3: Cross multiply
   84,081.93x = 126,119.25 × 20,900.72
4. Step 4: Simplify right side
   84,081.93x = 2,635,982,500.26
5. Step 5: Solve for x
   x = 2,635,982,500.26/84,081.93
6. Step 6: Final answer
   x = 31,350.17