Finding the Fourth Proportional to 111,632.72, 154,053.32 and 60,644.56

Step by Step Solution

1. Step 1: Write the proportion equation
   111,632.72 : 154,053.32 = 60,644.56 : x
2. Step 2: Convert to fraction form
   111,632.72/154,053.32 = 60,644.56/x
3. Step 3: Cross multiply
   111,632.72x = 154,053.32 × 60,644.56
4. Step 4: Simplify right side
   111,632.72x = 9,342,495,807.94
5. Step 5: Solve for x
   x = 9,342,495,807.94/111,632.72
6. Step 6: Final answer
   x = 83,689.58