Finding the Fourth Proportional to 56,395.49, 77,822.42 and 30,896.78

Step by Step Solution

1. Step 1: Write the proportion equation
   56,395.49 : 77,822.42 = 30,896.78 : x
2. Step 2: Convert to fraction form
   56,395.49/77,822.42 = 30,896.78/x
3. Step 3: Cross multiply
   56,395.49x = 77,822.42 × 30,896.78
4. Step 4: Simplify right side
   56,395.49x = 2,404,461,646.21
5. Step 5: Solve for x
   x = 2,404,461,646.21/56,395.49
6. Step 6: Final answer
   x = 42,635.71