Finding the Fourth Proportional to 56,056, 77,357.28 and 30,907.12

Step by Step Solution

1. Step 1: Write the proportion equation
   56,056 : 77,357.28 = 30,907.12 : x
2. Step 2: Convert to fraction form
   56,056/77,357.28 = 30,907.12/x
3. Step 3: Cross multiply
   56,056x = 77,357.28 × 30,907.12
4. Step 4: Simplify right side
   56,056x = 2,390,890,735.83
5. Step 5: Solve for x
   x = 2,390,890,735.83/56,056
6. Step 6: Final answer
   x = 42,651.83