Finding the Fourth Proportional to 55,683, 76,842.72 and 30,532.68

Step by Step Solution

1. Step 1: Write the proportion equation
   55,683 : 76,842.72 = 30,532.68 : x
2. Step 2: Convert to fraction form
   55,683/76,842.72 = 30,532.68/x
3. Step 3: Cross multiply
   55,683x = 76,842.72 × 30,532.68
4. Step 4: Simplify right side
   55,683x = 2,346,214,180.09
5. Step 5: Solve for x
   x = 2,346,214,180.09/55,683
6. Step 6: Final answer
   x = 42,135.20