Finding the Fourth Proportional to 56,790.72, 85,099.68 and 50,915.52

Step by Step Solution

1. Step 1: Write the proportion equation
   56,790.72 : 85,099.68 = 50,915.52 : x
2. Step 2: Convert to fraction form
   56,790.72/85,099.68 = 50,915.52/x
3. Step 3: Cross multiply
   56,790.72x = 85,099.68 × 50,915.52
4. Step 4: Simplify right side
   56,790.72x = 4,332,894,459.03
5. Step 5: Solve for x
   x = 4,332,894,459.03/56,790.72
6. Step 6: Final answer
   x = 76,295.82