Finding the Fourth Proportional to 56,463, 77,920.56 and 31,314.12

Step by Step Solution

1. Step 1: Write the proportion equation
   56,463 : 77,920.56 = 31,314.12 : x
2. Step 2: Convert to fraction form
   56,463/77,920.56 = 31,314.12/x
3. Step 3: Cross multiply
   56,463x = 77,920.56 × 31,314.12
4. Step 4: Simplify right side
   56,463x = 2,440,013,766.31
5. Step 5: Solve for x
   x = 2,440,013,766.31/56,463
6. Step 6: Final answer
   x = 43,214.38