Finding the Fourth Proportional to 221,152.41, 305,094.15 and 140,536.71

Step by Step Solution

1. Step 1: Write the proportion equation
   221,152.41 : 305,094.15 = 140,536.71 : x
2. Step 2: Convert to fraction form
   221,152.41/305,094.15 = 140,536.71/x
3. Step 3: Cross multiply
   221,152.41x = 305,094.15 × 140,536.71
4. Step 4: Simplify right side
   221,152.41x = 42,876,928,081.25
5. Step 5: Solve for x
   x = 42,876,928,081.25/221,152.41
6. Step 6: Final answer
   x = 193,879.54