Finding the Fourth Proportional to 105,660, 145,815.12 and 60,948

Step by Step Solution

1. Step 1: Write the proportion equation
   105,660 : 145,815.12 = 60,948 : x
2. Step 2: Convert to fraction form
   105,660/145,815.12 = 60,948/x
3. Step 3: Cross multiply
   105,660x = 145,815.12 × 60,948
4. Step 4: Simplify right side
   105,660x = 8,887,139,933.76
5. Step 5: Solve for x
   x = 8,887,139,933.76/105,660
6. Step 6: Final answer
   x = 84,110.73