Finding the Fourth Proportional to 112,105.20, 154,698.98 and 64,355.42

Step by Step Solution

1. Step 1: Write the proportion equation
   112,105.20 : 154,698.98 = 64,355.42 : x
2. Step 2: Convert to fraction form
   112,105.20/154,698.98 = 64,355.42/x
3. Step 3: Cross multiply
   112,105.20x = 154,698.98 × 64,355.42
4. Step 4: Simplify right side
   112,105.20x = 9,955,717,831.47
5. Step 5: Solve for x
   x = 9,955,717,831.47/112,105.20
6. Step 6: Final answer
   x = 88,806.92