Finding the Fourth Proportional to 112,454.76, 155,187.72 and 64,707.16

Step by Step Solution

1. Step 1: Write the proportion equation
   112,454.76 : 155,187.72 = 64,707.16 : x
2. Step 2: Convert to fraction form
   112,454.76/155,187.72 = 64,707.16/x
3. Step 3: Cross multiply
   112,454.76x = 155,187.72 × 64,707.16
4. Step 4: Simplify right side
   112,454.76x = 10,041,756,628.08
5. Step 5: Solve for x
   x = 10,041,756,628.08/112,454.76
6. Step 6: Final answer
   x = 89,295.97