Finding the Fourth Proportional to 53,061.13, 79,581.53 and 20,603.33

Step by Step Solution

1. Step 1: Write the proportion equation
   53,061.13 : 79,581.53 = 20,603.33 : x
2. Step 2: Convert to fraction form
   53,061.13/79,581.53 = 20,603.33/x
3. Step 3: Cross multiply
   53,061.13x = 79,581.53 × 20,603.33
4. Step 4: Simplify right side
   53,061.13x = 1,639,644,774.96
5. Step 5: Solve for x
   x = 1,639,644,774.96/53,061.13
6. Step 6: Final answer
   x = 30,901.05