Finding the Fourth Proportional to 113,585.60, 156,748.56 and 65,867.06

Step by Step Solution

1. Step 1: Write the proportion equation
   113,585.60 : 156,748.56 = 65,867.06 : x
2. Step 2: Convert to fraction form
   113,585.60/156,748.56 = 65,867.06/x
3. Step 3: Cross multiply
   113,585.60x = 156,748.56 × 65,867.06
4. Step 4: Simplify right side
   113,585.60x = 10,324,566,806.43
5. Step 5: Solve for x
   x = 10,324,566,806.43/113,585.60
6. Step 6: Final answer
   x = 90,896.79