Finding the Fourth Proportional to 108,520.49, 149,759.31 and 60,123.45

Step by Step Solution

1. Step 1: Write the proportion equation
   108,520.49 : 149,759.31 = 60,123.45 : x
2. Step 2: Convert to fraction form
   108,520.49/149,759.31 = 60,123.45/x
3. Step 3: Cross multiply
   108,520.49x = 149,759.31 × 60,123.45
4. Step 4: Simplify right side
   108,520.49x = 9,004,046,386.82
5. Step 5: Solve for x
   x = 9,004,046,386.82/108,520.49
6. Step 6: Final answer
   x = 82,970.94