Finding the Fourth Proportional to 35,536.56, 53,317.80 and 20,742.72

Step by Step Solution

1. Step 1: Write the proportion equation
   35,536.56 : 53,317.80 = 20,742.72 : x
2. Step 2: Convert to fraction form
   35,536.56/53,317.80 = 20,742.72/x
3. Step 3: Cross multiply
   35,536.56x = 53,317.80 × 20,742.72
4. Step 4: Simplify right side
   35,536.56x = 1,105,956,196.42
5. Step 5: Solve for x
   x = 1,105,956,196.42/35,536.56
6. Step 6: Final answer
   x = 31,121.64