Finding the Fourth Proportional to 143,947.20, 215,828.39 and 59,765.46

Step by Step Solution

1. Step 1: Write the proportion equation
   143,947.20 : 215,828.39 = 59,765.46 : x
2. Step 2: Convert to fraction form
   143,947.20/215,828.39 = 59,765.46/x
3. Step 3: Cross multiply
   143,947.20x = 215,828.39 × 59,765.46
4. Step 4: Simplify right side
   143,947.20x = 12,899,082,710.58
5. Step 5: Solve for x
   x = 12,899,082,710.58/143,947.20
6. Step 6: Final answer
   x = 89,609.82