Finding the Fourth Proportional to 33,870, 46,742.04 and 19,720.56

Step by Step Solution

1. Step 1: Write the proportion equation
   33,870 : 46,742.04 = 19,720.56 : x
2. Step 2: Convert to fraction form
   33,870/46,742.04 = 19,720.56/x
3. Step 3: Cross multiply
   33,870x = 46,742.04 × 19,720.56
4. Step 4: Simplify right side
   33,870x = 921,779,204.34
5. Step 5: Solve for x
   x = 921,779,204.34/33,870
6. Step 6: Final answer
   x = 27,215.21