Finding the Fourth Proportional to 30,494.55, 42,059.88 and 21,532.71

Step by Step Solution

1. Step 1: Write the proportion equation
   30,494.55 : 42,059.88 = 21,532.71 : x
2. Step 2: Convert to fraction form
   30,494.55/42,059.88 = 21,532.71/x
3. Step 3: Cross multiply
   30,494.55x = 42,059.88 × 21,532.71
4. Step 4: Simplify right side
   30,494.55x = 905,663,198.67
5. Step 5: Solve for x
   x = 905,663,198.67/30,494.55
6. Step 6: Final answer
   x = 29,699.18