Finding the Fourth Proportional to 152,933.64, 229,540.56 and 81,936.42

Step by Step Solution

1. Step 1: Write the proportion equation
   152,933.64 : 229,540.56 = 81,936.42 : x
2. Step 2: Convert to fraction form
   152,933.64/229,540.56 = 81,936.42/x
3. Step 3: Cross multiply
   152,933.64x = 229,540.56 × 81,936.42
4. Step 4: Simplify right side
   152,933.64x = 18,807,731,731.20
5. Step 5: Solve for x
   x = 18,807,731,731.20/152,933.64
6. Step 6: Final answer
   x = 122,979.69