Finding the Fourth Proportional to 105,429.48, 145,426.02 and 73,586.60

Step by Step Solution

1. Step 1: Write the proportion equation
   105,429.48 : 145,426.02 = 73,586.60 : x
2. Step 2: Convert to fraction form
   105,429.48/145,426.02 = 73,586.60/x
3. Step 3: Cross multiply
   105,429.48x = 145,426.02 × 73,586.60
4. Step 4: Simplify right side
   105,429.48x = 10,701,406,363.33
5. Step 5: Solve for x
   x = 10,701,406,363.33/105,429.48
6. Step 6: Final answer
   x = 101,502.98