Finding the Fourth Proportional to 111,520.79, 153,896.24 and 60,533.61

Step by Step Solution

1. Step 1: Write the proportion equation
   111,520.79 : 153,896.24 = 60,533.61 : x
2. Step 2: Convert to fraction form
   111,520.79/153,896.24 = 60,533.61/x
3. Step 3: Cross multiply
   111,520.79x = 153,896.24 × 60,533.61
4. Step 4: Simplify right side
   111,520.79x = 9,315,894,669.96
5. Step 5: Solve for x
   x = 9,315,894,669.96/111,520.79
6. Step 6: Final answer
   x = 83,535.05