Finding the Fourth Proportional to 89,763.69, 123,954.00 and 85,509.98

Step by Step Solution

1. Step 1: Write the proportion equation
   89,763.69 : 123,954.00 = 85,509.98 : x
2. Step 2: Convert to fraction form
   89,763.69/123,954.00 = 85,509.98/x
3. Step 3: Cross multiply
   89,763.69x = 123,954.00 × 85,509.98
4. Step 4: Simplify right side
   89,763.69x = 10,599,303,585.32
5. Step 5: Solve for x
   x = 10,599,303,585.32/89,763.69
6. Step 6: Final answer
   x = 118,080.07