Finding the Fourth Proportional to 154,804.04, 213,631.98 and 86,836.10

Step by Step Solution

1. Step 1: Write the proportion equation
   154,804.04 : 213,631.98 = 86,836.10 : x
2. Step 2: Convert to fraction form
   154,804.04/213,631.98 = 86,836.10/x
3. Step 3: Cross multiply
   154,804.04x = 213,631.98 × 86,836.10
4. Step 4: Simplify right side
   154,804.04x = 18,550,967,978.48
5. Step 5: Solve for x
   x = 18,550,967,978.48/154,804.04
6. Step 6: Final answer
   x = 119,835.17