Finding the Fourth Proportional to 105,613, 145,710.06 and 60,258.40

Step by Step Solution

1. Step 1: Write the proportion equation
   105,613 : 145,710.06 = 60,258.40 : x
2. Step 2: Convert to fraction form
   105,613/145,710.06 = 60,258.40/x
3. Step 3: Cross multiply
   105,613x = 145,710.06 × 60,258.40
4. Step 4: Simplify right side
   105,613x = 8,780,255,079.50
5. Step 5: Solve for x
   x = 8,780,255,079.50/105,613
6. Step 6: Final answer
   x = 83,136.12