Finding the Fourth Proportional to 56,538.72, 84,809.88 and 28,443.42

Step by Step Solution

1. Step 1: Write the proportion equation
   56,538.72 : 84,809.88 = 28,443.42 : x
2. Step 2: Convert to fraction form
   56,538.72/84,809.88 = 28,443.42/x
3. Step 3: Cross multiply
   56,538.72x = 84,809.88 × 28,443.42
4. Step 4: Simplify right side
   56,538.72x = 2,412,283,036.99
5. Step 5: Solve for x
   x = 2,412,283,036.99/56,538.72
6. Step 6: Final answer
   x = 42,666.04