Finding the Fourth Proportional to 105,589.72, 145,706.34 and 60,257.08

Step by Step Solution

1. Step 1: Write the proportion equation
   105,589.72 : 145,706.34 = 60,257.08 : x
2. Step 2: Convert to fraction form
   105,589.72/145,706.34 = 60,257.08/x
3. Step 3: Cross multiply
   105,589.72x = 145,706.34 × 60,257.08
4. Step 4: Simplify right side
   105,589.72x = 8,779,838,585.89
5. Step 5: Solve for x
   x = 8,779,838,585.89/105,589.72
6. Step 6: Final answer
   x = 83,150.51