Finding the Fourth Proportional to 153,932.82, 212,367.33 and 103,665.30

Step by Step Solution

1. Step 1: Write the proportion equation
   153,932.82 : 212,367.33 = 103,665.30 : x
2. Step 2: Convert to fraction form
   153,932.82/212,367.33 = 103,665.30/x
3. Step 3: Cross multiply
   153,932.82x = 212,367.33 × 103,665.30
4. Step 4: Simplify right side
   153,932.82x = 22,015,122,974.65
5. Step 5: Solve for x
   x = 22,015,122,974.65/153,932.82
6. Step 6: Final answer
   x = 143,017.73