Finding the Fourth Proportional to 112,144.80, 154,763.28 and 64,407.72

Step by Step Solution

1. Step 1: Write the proportion equation
   112,144.80 : 154,763.28 = 64,407.72 : x
2. Step 2: Convert to fraction form
   112,144.80/154,763.28 = 64,407.72/x
3. Step 3: Cross multiply
   112,144.80x = 154,763.28 × 64,407.72
4. Step 4: Simplify right side
   112,144.80x = 9,967,950,004.52
5. Step 5: Solve for x
   x = 9,967,950,004.52/112,144.80
6. Step 6: Final answer
   x = 88,884.64