Finding the Fourth Proportional to 111,642.72, 167,201.44 and 88,111.68

Step by Step Solution

1. Step 1: Write the proportion equation
   111,642.72 : 167,201.44 = 88,111.68 : x
2. Step 2: Convert to fraction form
   111,642.72/167,201.44 = 88,111.68/x
3. Step 3: Cross multiply
   111,642.72x = 167,201.44 × 88,111.68
4. Step 4: Simplify right side
   111,642.72x = 14,732,399,776.82
5. Step 5: Solve for x
   x = 14,732,399,776.82/111,642.72
6. Step 6: Final answer
   x = 131,960.24