Finding the Fourth Proportional to 113,742.72, 156,964.56 and 63,441.68

Step by Step Solution

1. Step 1: Write the proportion equation
   113,742.72 : 156,964.56 = 63,441.68 : x
2. Step 2: Convert to fraction form
   113,742.72/156,964.56 = 63,441.68/x
3. Step 3: Cross multiply
   113,742.72x = 156,964.56 × 63,441.68
4. Step 4: Simplify right side
   113,742.72x = 9,958,095,386.86
5. Step 5: Solve for x
   x = 9,958,095,386.86/113,742.72
6. Step 6: Final answer
   x = 87,549.30