Finding the Fourth Proportional to 140,727.31, 211,089.64 and 60,821.78

Step by Step Solution

1. Step 1: Write the proportion equation
   140,727.31 : 211,089.64 = 60,821.78 : x
2. Step 2: Convert to fraction form
   140,727.31/211,089.64 = 60,821.78/x
3. Step 3: Cross multiply
   140,727.31x = 211,089.64 × 60,821.78
4. Step 4: Simplify right side
   140,727.31x = 12,838,846,436.86
5. Step 5: Solve for x
   x = 12,838,846,436.86/140,727.31
6. Step 6: Final answer
   x = 91,232.09