Finding the Fourth Proportional to 105,880.72, 146,120.16 and 63,438.34

Step by Step Solution

1. Step 1: Write the proportion equation
   105,880.72 : 146,120.16 = 63,438.34 : x
2. Step 2: Convert to fraction form
   105,880.72/146,120.16 = 63,438.34/x
3. Step 3: Cross multiply
   105,880.72x = 146,120.16 × 63,438.34
4. Step 4: Simplify right side
   105,880.72x = 9,269,620,390.93
5. Step 5: Solve for x
   x = 9,269,620,390.93/105,880.72
6. Step 6: Final answer
   x = 87,547.76