Finding the Fourth Proportional to 112,127.72, 154,739.94 and 64,389.56

Step by Step Solution

1. Step 1: Write the proportion equation
   112,127.72 : 154,739.94 = 64,389.56 : x
2. Step 2: Convert to fraction form
   112,127.72/154,739.94 = 64,389.56/x
3. Step 3: Cross multiply
   112,127.72x = 154,739.94 × 64,389.56
4. Step 4: Simplify right side
   112,127.72x = 9,963,636,651.03
5. Step 5: Solve for x
   x = 9,963,636,651.03/112,127.72
6. Step 6: Final answer
   x = 88,859.71