Finding the Fourth Proportional to 54,142.32, 74,716.68 and 31,494.72

Step by Step Solution

1. Step 1: Write the proportion equation
   54,142.32 : 74,716.68 = 31,494.72 : x
2. Step 2: Convert to fraction form
   54,142.32/74,716.68 = 31,494.72/x
3. Step 3: Cross multiply
   54,142.32x = 74,716.68 × 31,494.72
4. Step 4: Simplify right side
   54,142.32x = 2,353,180,915.93
5. Step 5: Solve for x
   x = 2,353,180,915.93/54,142.32
6. Step 6: Final answer
   x = 43,462.88