Finding the Fourth Proportional to 84,081.56, 126,118.69 and 20,900.34

Step by Step Solution

1. Step 1: Write the proportion equation
   84,081.56 : 126,118.69 = 20,900.34 : x
2. Step 2: Convert to fraction form
   84,081.56/126,118.69 = 20,900.34/x
3. Step 3: Cross multiply
   84,081.56x = 126,118.69 × 20,900.34
4. Step 4: Simplify right side
   84,081.56x = 2,635,923,449.10
5. Step 5: Solve for x
   x = 2,635,923,449.10/84,081.56
6. Step 6: Final answer
   x = 31,349.60