Finding the Fourth Proportional to 149,667.12, 206,540.61 and 111,459.45

Step by Step Solution

1. Step 1: Write the proportion equation
   149,667.12 : 206,540.61 = 111,459.45 : x
2. Step 2: Convert to fraction form
   149,667.12/206,540.61 = 111,459.45/x
3. Step 3: Cross multiply
   149,667.12x = 206,540.61 × 111,459.45
4. Step 4: Simplify right side
   149,667.12x = 23,020,902,793.26
5. Step 5: Solve for x
   x = 23,020,902,793.26/149,667.12
6. Step 6: Final answer
   x = 153,814.03