Finding the Fourth Proportional to 113,610.16, 156,756.76 and 65,209.13

Step by Step Solution

1. Step 1: Write the proportion equation
   113,610.16 : 156,756.76 = 65,209.13 : x
2. Step 2: Convert to fraction form
   113,610.16/156,756.76 = 65,209.13/x
3. Step 3: Cross multiply
   113,610.16x = 156,756.76 × 65,209.13
4. Step 4: Simplify right side
   113,610.16x = 10,221,970,994.41
5. Step 5: Solve for x
   x = 10,221,970,994.41/113,610.16
6. Step 6: Final answer
   x = 89,974.09