Finding the Fourth Proportional to 108,215.64, 149,338.32 and 60,471

Step by Step Solution

1. Step 1: Write the proportion equation
   108,215.64 : 149,338.32 = 60,471 : x
2. Step 2: Convert to fraction form
   108,215.64/149,338.32 = 60,471/x
3. Step 3: Cross multiply
   108,215.64x = 149,338.32 × 60,471
4. Step 4: Simplify right side
   108,215.64x = 9,030,637,548.72
5. Step 5: Solve for x
   x = 9,030,637,548.72/108,215.64
6. Step 6: Final answer
   x = 83,450.39