Finding the Fourth Proportional to 105,790.05, 145,974.96 and 60,460.83

Step by Step Solution

1. Step 1: Write the proportion equation
   105,790.05 : 145,974.96 = 60,460.83 : x
2. Step 2: Convert to fraction form
   105,790.05/145,974.96 = 60,460.83/x
3. Step 3: Cross multiply
   105,790.05x = 145,974.96 × 60,460.83
4. Step 4: Simplify right side
   105,790.05x = 8,825,767,240.82
5. Step 5: Solve for x
   x = 8,825,767,240.82/105,790.05
6. Step 6: Final answer
   x = 83,427.20