Finding the Fourth Proportional to 143,970.56, 215,863.34 and 59,788.79

Step by Step Solution

1. Step 1: Write the proportion equation
   143,970.56 : 215,863.34 = 59,788.79 : x
2. Step 2: Convert to fraction form
   143,970.56/215,863.34 = 59,788.79/x
3. Step 3: Cross multiply
   143,970.56x = 215,863.34 × 59,788.79
4. Step 4: Simplify right side
   143,970.56x = 12,906,207,605.01
5. Step 5: Solve for x
   x = 12,906,207,605.01/143,970.56
6. Step 6: Final answer
   x = 89,644.77