Finding the Fourth Proportional to 56,287.72, 77,676.15 and 30,793.42

Step by Step Solution

1. Step 1: Write the proportion equation
   56,287.72 : 77,676.15 = 30,793.42 : x
2. Step 2: Convert to fraction form
   56,287.72/77,676.15 = 30,793.42/x
3. Step 3: Cross multiply
   56,287.72x = 77,676.15 × 30,793.42
4. Step 4: Simplify right side
   56,287.72x = 2,391,914,310.93
5. Step 5: Solve for x
   x = 2,391,914,310.93/56,287.72
6. Step 6: Final answer
   x = 42,494.43