Finding the Fourth Proportional to 105,487.34, 145,571.40 and 60,164.12

Step by Step Solution

1. Step 1: Write the proportion equation
   105,487.34 : 145,571.40 = 60,164.12 : x
2. Step 2: Convert to fraction form
   105,487.34/145,571.40 = 60,164.12/x
3. Step 3: Cross multiply
   105,487.34x = 145,571.40 × 60,164.12
4. Step 4: Simplify right side
   105,487.34x = 8,758,175,178.17
5. Step 5: Solve for x
   x = 8,758,175,178.17/105,487.34
6. Step 6: Final answer
   x = 83,025.84