Finding the Fourth Proportional to 105,521.92, 145,634.17 and 60,189.52

Step by Step Solution

1. Step 1: Write the proportion equation
   105,521.92 : 145,634.17 = 60,189.52 : x
2. Step 2: Convert to fraction form
   105,521.92/145,634.17 = 60,189.52/x
3. Step 3: Cross multiply
   105,521.92x = 145,634.17 × 60,189.52
4. Step 4: Simplify right side
   105,521.92x = 8,765,650,787.90
5. Step 5: Solve for x
   x = 8,765,650,787.90/105,521.92
6. Step 6: Final answer
   x = 83,069.48