Finding the Fourth Proportional to 86,978.76, 120,027.33 and 49,253.10

Step by Step Solution

1. Step 1: Write the proportion equation
   86,978.76 : 120,027.33 = 49,253.10 : x
2. Step 2: Convert to fraction form
   86,978.76/120,027.33 = 49,253.10/x
3. Step 3: Cross multiply
   86,978.76x = 120,027.33 × 49,253.10
4. Step 4: Simplify right side
   86,978.76x = 5,911,718,087.22
5. Step 5: Solve for x
   x = 5,911,718,087.22/86,978.76
6. Step 6: Final answer
   x = 67,967.38