Finding the Fourth Proportional to 55,644, 76,788.72 and 30,492.96

Step by Step Solution

1. Step 1: Write the proportion equation
   55,644 : 76,788.72 = 30,492.96 : x
2. Step 2: Convert to fraction form
   55,644/76,788.72 = 30,492.96/x
3. Step 3: Cross multiply
   55,644x = 76,788.72 × 30,492.96
4. Step 4: Simplify right side
   55,644x = 2,341,515,367.41
5. Step 5: Solve for x
   x = 2,341,515,367.41/55,644
6. Step 6: Final answer
   x = 42,080.28