Finding the Fourth Proportional to 105,434.73, 145,485.59 and 62,984.25

Step by Step Solution

1. Step 1: Write the proportion equation
   105,434.73 : 145,485.59 = 62,984.25 : x
2. Step 2: Convert to fraction form
   105,434.73/145,485.59 = 62,984.25/x
3. Step 3: Cross multiply
   105,434.73x = 145,485.59 × 62,984.25
4. Step 4: Simplify right side
   105,434.73x = 9,163,300,457.04
5. Step 5: Solve for x
   x = 9,163,300,457.04/105,434.73
6. Step 6: Final answer
   x = 86,909.70