Finding the Fourth Proportional to 71,910.42, 107,780.91 and 32,421.30

Step by Step Solution

1. Step 1: Write the proportion equation
   71,910.42 : 107,780.91 = 32,421.30 : x
2. Step 2: Convert to fraction form
   71,910.42/107,780.91 = 32,421.30/x
3. Step 3: Cross multiply
   71,910.42x = 107,780.91 × 32,421.30
4. Step 4: Simplify right side
   71,910.42x = 3,494,397,217.38
5. Step 5: Solve for x
   x = 3,494,397,217.38/71,910.42
6. Step 6: Final answer
   x = 48,593.75