Finding the Fourth Proportional to 108,466.05, 149,678.78 and 63,145.34

Step by Step Solution

1. Step 1: Write the proportion equation
   108,466.05 : 149,678.78 = 63,145.34 : x
2. Step 2: Convert to fraction form
   108,466.05/149,678.78 = 63,145.34/x
3. Step 3: Cross multiply
   108,466.05x = 149,678.78 × 63,145.34
4. Step 4: Simplify right side
   108,466.05x = 9,451,516,389.76
5. Step 5: Solve for x
   x = 9,451,516,389.76/108,466.05
6. Step 6: Final answer
   x = 87,138.02