Finding the Fourth Proportional to 86,642.96, 119,564.28 and 48,920.72

Step by Step Solution

1. Step 1: Write the proportion equation
   86,642.96 : 119,564.28 = 48,920.72 : x
2. Step 2: Convert to fraction form
   86,642.96/119,564.28 = 48,920.72/x
3. Step 3: Cross multiply
   86,642.96x = 119,564.28 × 48,920.72
4. Step 4: Simplify right side
   86,642.96x = 5,849,170,663.88
5. Step 5: Solve for x
   x = 5,849,170,663.88/86,642.96
6. Step 6: Final answer
   x = 67,508.90