Finding the Fourth Proportional to 113,697, 156,906.72 and 63,396

Step by Step Solution

1. Step 1: Write the proportion equation
   113,697 : 156,906.72 = 63,396 : x
2. Step 2: Convert to fraction form
   113,697/156,906.72 = 63,396/x
3. Step 3: Cross multiply
   113,697x = 156,906.72 × 63,396
4. Step 4: Simplify right side
   113,697x = 9,947,258,421.12
5. Step 5: Solve for x
   x = 9,947,258,421.12/113,697
6. Step 6: Final answer
   x = 87,489.19