Finding the Fourth Proportional to 143,990.22, 215,960.72 and 38,784.59

Step by Step Solution

1. Step 1: Write the proportion equation
   143,990.22 : 215,960.72 = 38,784.59 : x
2. Step 2: Convert to fraction form
   143,990.22/215,960.72 = 38,784.59/x
3. Step 3: Cross multiply
   143,990.22x = 215,960.72 × 38,784.59
4. Step 4: Simplify right side
   143,990.22x = 8,375,947,735.59
5. Step 5: Solve for x
   x = 8,375,947,735.59/143,990.22
6. Step 6: Final answer
   x = 58,170.25