Finding the Fourth Proportional to 112,287.56, 154,988.10 and 64,556.28

Step by Step Solution

1. Step 1: Write the proportion equation
   112,287.56 : 154,988.10 = 64,556.28 : x
2. Step 2: Convert to fraction form
   112,287.56/154,988.10 = 64,556.28/x
3. Step 3: Cross multiply
   112,287.56x = 154,988.10 × 64,556.28
4. Step 4: Simplify right side
   112,287.56x = 10,005,455,180.27
5. Step 5: Solve for x
   x = 10,005,455,180.27/112,287.56
6. Step 6: Final answer
   x = 89,105.65