Finding the Fourth Proportional to 56,535.72, 84,805.38 and 28,440.42

Step by Step Solution

1. Step 1: Write the proportion equation
   56,535.72 : 84,805.38 = 28,440.42 : x
2. Step 2: Convert to fraction form
   56,535.72/84,805.38 = 28,440.42/x
3. Step 3: Cross multiply
   56,535.72x = 84,805.38 × 28,440.42
4. Step 4: Simplify right side
   56,535.72x = 2,411,900,625.46
5. Step 5: Solve for x
   x = 2,411,900,625.46/56,535.72
6. Step 6: Final answer
   x = 42,661.54