Finding the Fourth Proportional to 105,725.72, 145,898.34 and 60,403.52

Step by Step Solution

1. Step 1: Write the proportion equation
   105,725.72 : 145,898.34 = 60,403.52 : x
2. Step 2: Convert to fraction form
   105,725.72/145,898.34 = 60,403.52/x
3. Step 3: Cross multiply
   105,725.72x = 145,898.34 × 60,403.52
4. Step 4: Simplify right side
   105,725.72x = 8,812,773,298.16
5. Step 5: Solve for x
   x = 8,812,773,298.16/105,725.72
6. Step 6: Final answer
   x = 83,355.06