Finding the Fourth Proportional to 143,688.94, 215,481.54 and 60,589.42

Step by Step Solution

1. Step 1: Write the proportion equation
   143,688.94 : 215,481.54 = 60,589.42 : x
2. Step 2: Convert to fraction form
   143,688.94/215,481.54 = 60,589.42/x
3. Step 3: Cross multiply
   143,688.94x = 215,481.54 × 60,589.42
4. Step 4: Simplify right side
   143,688.94x = 13,055,901,529.31
5. Step 5: Solve for x
   x = 13,055,901,529.31/143,688.94
6. Step 6: Final answer
   x = 90,862.26