Finding the Fourth Proportional to 56,235, 77,605.92 and 31,086.12

Step by Step Solution

1. Step 1: Write the proportion equation
   56,235 : 77,605.92 = 31,086.12 : x
2. Step 2: Convert to fraction form
   56,235/77,605.92 = 31,086.12/x
3. Step 3: Cross multiply
   56,235x = 77,605.92 × 31,086.12
4. Step 4: Simplify right side
   56,235x = 2,412,466,941.83
5. Step 5: Solve for x
   x = 2,412,466,941.83/56,235
6. Step 6: Final answer
   x = 42,899.74