Finding the Fourth Proportional to 56,212.38, 77,441.37 and 39,185.67

Step by Step Solution

1. Step 1: Write the proportion equation
   56,212.38 : 77,441.37 = 39,185.67 : x
2. Step 2: Convert to fraction form
   56,212.38/77,441.37 = 39,185.67/x
3. Step 3: Cross multiply
   56,212.38x = 77,441.37 × 39,185.67
4. Step 4: Simplify right side
   56,212.38x = 3,034,592,112.63
5. Step 5: Solve for x
   x = 3,034,592,112.63/56,212.38
6. Step 6: Final answer
   x = 53,984.41