Finding the Fourth Proportional to 150,086.04, 207,111 and 82,089.78

Step by Step Solution

1. Step 1: Write the proportion equation
   150,086.04 : 207,111 = 82,089.78 : x
2. Step 2: Convert to fraction form
   150,086.04/207,111 = 82,089.78/x
3. Step 3: Cross multiply
   150,086.04x = 207,111 × 82,089.78
4. Step 4: Simplify right side
   150,086.04x = 17,001,696,425.58
5. Step 5: Solve for x
   x = 17,001,696,425.58/150,086.04
6. Step 6: Final answer
   x = 113,279.67