Finding the Fourth Proportional to 56,112, 77,436.24 and 30,963.12

Step by Step Solution

1. Step 1: Write the proportion equation
   56,112 : 77,436.24 = 30,963.12 : x
2. Step 2: Convert to fraction form
   56,112/77,436.24 = 30,963.12/x
3. Step 3: Cross multiply
   56,112x = 77,436.24 × 30,963.12
4. Step 4: Simplify right side
   56,112x = 2,397,667,591.47
5. Step 5: Solve for x
   x = 2,397,667,591.47/56,112
6. Step 6: Final answer
   x = 42,730.03