Finding the Fourth Proportional to 112,459.19, 155,168.69 and 64,712.54

Step by Step Solution

1. Step 1: Write the proportion equation
   112,459.19 : 155,168.69 = 64,712.54 : x
2. Step 2: Convert to fraction form
   112,459.19/155,168.69 = 64,712.54/x
3. Step 3: Cross multiply
   112,459.19x = 155,168.69 × 64,712.54
4. Step 4: Simplify right side
   112,459.19x = 10,041,360,122.73
5. Step 5: Solve for x
   x = 10,041,360,122.73/112,459.19
6. Step 6: Final answer
   x = 89,288.92