Finding the Fourth Proportional to 111,651.03, 167,102.31 and 91,659.42

Step by Step Solution

1. Step 1: Write the proportion equation
   111,651.03 : 167,102.31 = 91,659.42 : x
2. Step 2: Convert to fraction form
   111,651.03/167,102.31 = 91,659.42/x
3. Step 3: Cross multiply
   111,651.03x = 167,102.31 × 91,659.42
4. Step 4: Simplify right side
   111,651.03x = 15,316,500,815.26
5. Step 5: Solve for x
   x = 15,316,500,815.26/111,651.03
6. Step 6: Final answer
   x = 137,181.90