Finding the Fourth Proportional to 113,594.40, 156,765.60 and 65,862.72

Step by Step Solution

1. Step 1: Write the proportion equation
   113,594.40 : 156,765.60 = 65,862.72 : x
2. Step 2: Convert to fraction form
   113,594.40/156,765.60 = 65,862.72/x
3. Step 3: Cross multiply
   113,594.40x = 156,765.60 × 65,862.72
4. Step 4: Simplify right side
   113,594.40x = 10,325,008,818.43
5. Step 5: Solve for x
   x = 10,325,008,818.43/113,594.40
6. Step 6: Final answer
   x = 90,893.64