Finding the Fourth Proportional to 56,145.75, 77,481.29 and 30,995.25

Step by Step Solution

1. Step 1: Write the proportion equation
   56,145.75 : 77,481.29 = 30,995.25 : x
2. Step 2: Convert to fraction form
   56,145.75/77,481.29 = 30,995.25/x
3. Step 3: Cross multiply
   56,145.75x = 77,481.29 × 30,995.25
4. Step 4: Simplify right side
   56,145.75x = 2,401,551,798.90
5. Step 5: Solve for x
   x = 2,401,551,798.90/56,145.75
6. Step 6: Final answer
   x = 42,773.53