Finding the Fourth Proportional to 111,355.92, 153,874.56 and 81,088.32

Step by Step Solution

1. Step 1: Write the proportion equation
   111,355.92 : 153,874.56 = 81,088.32 : x
2. Step 2: Convert to fraction form
   111,355.92/153,874.56 = 81,088.32/x
3. Step 3: Cross multiply
   111,355.92x = 153,874.56 × 81,088.32
4. Step 4: Simplify right side
   111,355.92x = 12,477,429,561.14
5. Step 5: Solve for x
   x = 12,477,429,561.14/111,355.92
6. Step 6: Final answer
   x = 112,049.99