Finding the Fourth Proportional to 128,333.25, 177,101 and 71,744.62

Step by Step Solution

1. Step 1: Write the proportion equation
   128,333.25 : 177,101 = 71,744.62 : x
2. Step 2: Convert to fraction form
   128,333.25/177,101 = 71,744.62/x
3. Step 3: Cross multiply
   128,333.25x = 177,101 × 71,744.62
4. Step 4: Simplify right side
   128,333.25x = 12,706,043,946.62
5. Step 5: Solve for x
   x = 12,706,043,946.62/128,333.25
6. Step 6: Final answer
   x = 99,008.20