Finding the Fourth Proportional to 112,395.35, 155,112.50 and 64,647.68

Step by Step Solution

1. Step 1: Write the proportion equation
   112,395.35 : 155,112.50 = 64,647.68 : x
2. Step 2: Convert to fraction form
   112,395.35/155,112.50 = 64,647.68/x
3. Step 3: Cross multiply
   112,395.35x = 155,112.50 × 64,647.68
4. Step 4: Simplify right side
   112,395.35x = 10,027,662,650.06
5. Step 5: Solve for x
   x = 10,027,662,650.06/112,395.35
6. Step 6: Final answer
   x = 89,217.77