Finding the Fourth Proportional to 72,241.68, 108,343.88 and 21,630.72

Step by Step Solution

1. Step 1: Write the proportion equation
   72,241.68 : 108,343.88 = 21,630.72 : x
2. Step 2: Convert to fraction form
   72,241.68/108,343.88 = 21,630.72/x
3. Step 3: Cross multiply
   72,241.68x = 108,343.88 × 21,630.72
4. Step 4: Simplify right side
   72,241.68x = 2,343,556,023.84
5. Step 5: Solve for x
   x = 2,343,556,023.84/72,241.68
6. Step 6: Final answer
   x = 32,440.50