Finding the Fourth Proportional to 30,555.20, 42,109.10 and 23,830.20

Step by Step Solution

1. Step 1: Write the proportion equation
   30,555.20 : 42,109.10 = 23,830.20 : x
2. Step 2: Convert to fraction form
   30,555.20/42,109.10 = 23,830.20/x
3. Step 3: Cross multiply
   30,555.20x = 42,109.10 × 23,830.20
4. Step 4: Simplify right side
   30,555.20x = 1,003,468,274.82
5. Step 5: Solve for x
   x = 1,003,468,274.82/30,555.20
6. Step 6: Final answer
   x = 32,841.16