Finding the Fourth Proportional to 143,947.81, 215,478.83 and 93,920.18

Step by Step Solution

1. Step 1: Write the proportion equation
   143,947.81 : 215,478.83 = 93,920.18 : x
2. Step 2: Convert to fraction form
   143,947.81/215,478.83 = 93,920.18/x
3. Step 3: Cross multiply
   143,947.81x = 215,478.83 × 93,920.18
4. Step 4: Simplify right side
   143,947.81x = 20,237,810,499.79
5. Step 5: Solve for x
   x = 20,237,810,499.79/143,947.81
6. Step 6: Final answer
   x = 140,591.31