Finding the Fourth Proportional to 112,159.37, 154,796.72 and 71,918.57

Step by Step Solution

1. Step 1: Write the proportion equation
   112,159.37 : 154,796.72 = 71,918.57 : x
2. Step 2: Convert to fraction form
   112,159.37/154,796.72 = 71,918.57/x
3. Step 3: Cross multiply
   112,159.37x = 154,796.72 × 71,918.57
4. Step 4: Simplify right side
   112,159.37x = 11,132,757,609.51
5. Step 5: Solve for x
   x = 11,132,757,609.51/112,159.37
6. Step 6: Final answer
   x = 99,258.39