Finding the Fourth Proportional to 113,211.27, 156,228.27 and 64,811.58

Step by Step Solution

1. Step 1: Write the proportion equation
   113,211.27 : 156,228.27 = 64,811.58 : x
2. Step 2: Convert to fraction form
   113,211.27/156,228.27 = 64,811.58/x
3. Step 3: Cross multiply
   113,211.27x = 156,228.27 × 64,811.58
4. Step 4: Simplify right side
   113,211.27x = 10,125,401,019.37
5. Step 5: Solve for x
   x = 10,125,401,019.37/113,211.27
6. Step 6: Final answer
   x = 89,438.10