Finding the Fourth Proportional to 56,651.36, 78,171.90 and 31,153.52

Step by Step Solution

1. Step 1: Write the proportion equation
   56,651.36 : 78,171.90 = 31,153.52 : x
2. Step 2: Convert to fraction form
   56,651.36/78,171.90 = 31,153.52/x
3. Step 3: Cross multiply
   56,651.36x = 78,171.90 × 31,153.52
4. Step 4: Simplify right side
   56,651.36x = 2,435,329,850.09
5. Step 5: Solve for x
   x = 2,435,329,850.09/56,651.36
6. Step 6: Final answer
   x = 42,988.02