Finding the Fourth Proportional to 56,345.85, 77,757.28 and 30,853.82

Step by Step Solution

1. Step 1: Write the proportion equation
   56,345.85 : 77,757.28 = 30,853.82 : x
2. Step 2: Convert to fraction form
   56,345.85/77,757.28 = 30,853.82/x
3. Step 3: Cross multiply
   56,345.85x = 77,757.28 × 30,853.82
4. Step 4: Simplify right side
   56,345.85x = 2,399,109,238.07
5. Step 5: Solve for x
   x = 2,399,109,238.07/56,345.85
6. Step 6: Final answer
   x = 42,578.28