Finding the Fourth Proportional to 278,459.10, 384,271.20 and 151,131.96

Step by Step Solution

1. Step 1: Write the proportion equation
   278,459.10 : 384,271.20 = 151,131.96 : x
2. Step 2: Convert to fraction form
   278,459.10/384,271.20 = 151,131.96/x
3. Step 3: Cross multiply
   278,459.10x = 384,271.20 × 151,131.96
4. Step 4: Simplify right side
   278,459.10x = 58,075,659,627.55
5. Step 5: Solve for x
   x = 58,075,659,627.55/278,459.10
6. Step 6: Final answer
   x = 208,560.83