Finding the Fourth Proportional to 56,633.97, 78,156.88 and 31,142.27

Step by Step Solution

1. Step 1: Write the proportion equation
   56,633.97 : 78,156.88 = 31,142.27 : x
2. Step 2: Convert to fraction form
   56,633.97/78,156.88 = 31,142.27/x
3. Step 3: Cross multiply
   56,633.97x = 78,156.88 × 31,142.27
4. Step 4: Simplify right side
   56,633.97x = 2,433,982,952.03
5. Step 5: Solve for x
   x = 2,433,982,952.03/56,633.97
6. Step 6: Final answer
   x = 42,977.44