Finding the Fourth Proportional to 56,013.30, 77,297.38 and 30,519.88

Step by Step Solution

1. Step 1: Write the proportion equation
   56,013.30 : 77,297.38 = 30,519.88 : x
2. Step 2: Convert to fraction form
   56,013.30/77,297.38 = 30,519.88/x
3. Step 3: Cross multiply
   56,013.30x = 77,297.38 × 30,519.88
4. Step 4: Simplify right side
   56,013.30x = 2,359,106,362.21
5. Step 5: Solve for x
   x = 2,359,106,362.21/56,013.30
6. Step 6: Final answer
   x = 42,116.90