Finding the Fourth Proportional to 140,843.54, 211,123.15 and 88,289.93

Step by Step Solution

1. Step 1: Write the proportion equation
   140,843.54 : 211,123.15 = 88,289.93 : x
2. Step 2: Convert to fraction form
   140,843.54/211,123.15 = 88,289.93/x
3. Step 3: Cross multiply
   140,843.54x = 211,123.15 × 88,289.93
4. Step 4: Simplify right side
   140,843.54x = 18,640,048,134.88
5. Step 5: Solve for x
   x = 18,640,048,134.88/140,843.54
6. Step 6: Final answer
   x = 132,345.78