Finding the Fourth Proportional to 56,648.38, 78,176.72 and 31,156.67

Step by Step Solution

1. Step 1: Write the proportion equation
   56,648.38 : 78,176.72 = 31,156.67 : x
2. Step 2: Convert to fraction form
   56,648.38/78,176.72 = 31,156.67/x
3. Step 3: Cross multiply
   56,648.38x = 78,176.72 × 31,156.67
4. Step 4: Simplify right side
   56,648.38x = 2,435,726,012.68
5. Step 5: Solve for x
   x = 2,435,726,012.68/56,648.38
6. Step 6: Final answer
   x = 42,997.28