Finding the Fourth Proportional to 56,443, 84,653.65 and 28,355.53

Step by Step Solution

1. Step 1: Write the proportion equation
   56,443 : 84,653.65 = 28,355.53 : x
2. Step 2: Convert to fraction form
   56,443/84,653.65 = 28,355.53/x
3. Step 3: Cross multiply
   56,443x = 84,653.65 × 28,355.53
4. Step 4: Simplify right side
   56,443x = 2,400,399,112.18
5. Step 5: Solve for x
   x = 2,400,399,112.18/56,443
6. Step 6: Final answer
   x = 42,527.84