Finding the Fourth Proportional to 113,510.36, 156,630.58 and 65,109.78

Step by Step Solution

1. Step 1: Write the proportion equation
   113,510.36 : 156,630.58 = 65,109.78 : x
2. Step 2: Convert to fraction form
   113,510.36/156,630.58 = 65,109.78/x
3. Step 3: Cross multiply
   113,510.36x = 156,630.58 × 65,109.78
4. Step 4: Simplify right side
   113,510.36x = 10,198,182,605.07
5. Step 5: Solve for x
   x = 10,198,182,605.07/113,510.36
6. Step 6: Final answer
   x = 89,843.63