Finding the Fourth Proportional to 28,071.78, 42,141.15 and 22,233.30

Step by Step Solution

1. Step 1: Write the proportion equation
   28,071.78 : 42,141.15 = 22,233.30 : x
2. Step 2: Convert to fraction form
   28,071.78/42,141.15 = 22,233.30/x
3. Step 3: Cross multiply
   28,071.78x = 42,141.15 × 22,233.30
4. Step 4: Simplify right side
   28,071.78x = 936,936,830.30
5. Step 5: Solve for x
   x = 936,936,830.30/28,071.78
6. Step 6: Final answer
   x = 33,376.47