Finding the Fourth Proportional to 113,453.16, 156,608.18 and 89,190.82

Step by Step Solution

1. Step 1: Write the proportion equation
   113,453.16 : 156,608.18 = 89,190.82 : x
2. Step 2: Convert to fraction form
   113,453.16/156,608.18 = 89,190.82/x
3. Step 3: Cross multiply
   113,453.16x = 156,608.18 × 89,190.82
4. Step 4: Simplify right side
   113,453.16x = 13,968,012,578.88
5. Step 5: Solve for x
   x = 13,968,012,578.88/113,453.16
6. Step 6: Final answer
   x = 123,117.00