Finding the Fourth Proportional to 56,112.81, 77,433.53 and 30,962.31

Step by Step Solution

1. Step 1: Write the proportion equation
   56,112.81 : 77,433.53 = 30,962.31 : x
2. Step 2: Convert to fraction form
   56,112.81/77,433.53 = 30,962.31/x
3. Step 3: Cross multiply
   56,112.81x = 77,433.53 × 30,962.31
4. Step 4: Simplify right side
   56,112.81x = 2,397,520,960.25
5. Step 5: Solve for x
   x = 2,397,520,960.25/56,112.81
6. Step 6: Final answer
   x = 42,726.80