Finding the Fourth Proportional to 124,404.50, 171,739.50 and 86,193.02

Step by Step Solution

1. Step 1: Write the proportion equation
   124,404.50 : 171,739.50 = 86,193.02 : x
2. Step 2: Convert to fraction form
   124,404.50/171,739.50 = 86,193.02/x
3. Step 3: Cross multiply
   124,404.50x = 171,739.50 × 86,193.02
4. Step 4: Simplify right side
   124,404.50x = 14,802,746,158.29
5. Step 5: Solve for x
   x = 14,802,746,158.29/124,404.50
6. Step 6: Final answer
   x = 118,988.83