Finding the Fourth Proportional to 140,464.47, 210,673.59 and 60,480.87

Step by Step Solution

1. Step 1: Write the proportion equation
   140,464.47 : 210,673.59 = 60,480.87 : x
2. Step 2: Convert to fraction form
   140,464.47/210,673.59 = 60,480.87/x
3. Step 3: Cross multiply
   140,464.47x = 210,673.59 × 60,480.87
4. Step 4: Simplify right side
   140,464.47x = 12,741,722,009.22
5. Step 5: Solve for x
   x = 12,741,722,009.22/140,464.47
6. Step 6: Final answer
   x = 90,711.35