Finding the Fourth Proportional to 112,196.16, 154,823.76 and 64,416

Step by Step Solution

1. Step 1: Write the proportion equation
   112,196.16 : 154,823.76 = 64,416 : x
2. Step 2: Convert to fraction form
   112,196.16/154,823.76 = 64,416/x
3. Step 3: Cross multiply
   112,196.16x = 154,823.76 × 64,416
4. Step 4: Simplify right side
   112,196.16x = 9,973,127,324.16
5. Step 5: Solve for x
   x = 9,973,127,324.16/112,196.16
6. Step 6: Final answer
   x = 88,890.10