Finding the Fourth Proportional to 276,061.68, 414,189.72 and 135,918.72

Step by Step Solution

1. Step 1: Write the proportion equation
   276,061.68 : 414,189.72 = 135,918.72 : x
2. Step 2: Convert to fraction form
   276,061.68/414,189.72 = 135,918.72/x
3. Step 3: Cross multiply
   276,061.68x = 414,189.72 × 135,918.72
4. Step 4: Simplify right side
   276,061.68x = 56,296,136,579.56
5. Step 5: Solve for x
   x = 56,296,136,579.56/276,061.68
6. Step 6: Final answer
   x = 203,925.94