Finding the Fourth Proportional to 140,271.42, 210,411.36 and 45,499.02

Step by Step Solution

1. Step 1: Write the proportion equation
   140,271.42 : 210,411.36 = 45,499.02 : x
2. Step 2: Convert to fraction form
   140,271.42/210,411.36 = 45,499.02/x
3. Step 3: Cross multiply
   140,271.42x = 210,411.36 × 45,499.02
4. Step 4: Simplify right side
   140,271.42x = 9,573,510,676.87
5. Step 5: Solve for x
   x = 9,573,510,676.87/140,271.42
6. Step 6: Final answer
   x = 68,249.90