Finding the Fourth Proportional to 56,658.58, 78,189 and 31,167.57

Step by Step Solution

1. Step 1: Write the proportion equation
   56,658.58 : 78,189 = 31,167.57 : x
2. Step 2: Convert to fraction form
   56,658.58/78,189 = 31,167.57/x
3. Step 3: Cross multiply
   56,658.58x = 78,189 × 31,167.57
4. Step 4: Simplify right side
   56,658.58x = 2,436,961,130.73
5. Step 5: Solve for x
   x = 2,436,961,130.73/56,658.58
6. Step 6: Final answer
   x = 43,011.33