Finding the Fourth Proportional to 221,085.03, 305,146.54 and 140,496.82

Step by Step Solution

1. Step 1: Write the proportion equation
   221,085.03 : 305,146.54 = 140,496.82 : x
2. Step 2: Convert to fraction form
   221,085.03/305,146.54 = 140,496.82/x
3. Step 3: Cross multiply
   221,085.03x = 305,146.54 × 140,496.82
4. Step 4: Simplify right side
   221,085.03x = 42,872,118,504.00
5. Step 5: Solve for x
   x = 42,872,118,504.00/221,085.03
6. Step 6: Final answer
   x = 193,916.88