Finding the Fourth Proportional to 350,870.18, 484,200.50 and 189,724.86

Step by Step Solution

1. Step 1: Write the proportion equation
   350,870.18 : 484,200.50 = 189,724.86 : x
2. Step 2: Convert to fraction form
   350,870.18/484,200.50 = 189,724.86/x
3. Step 3: Cross multiply
   350,870.18x = 484,200.50 × 189,724.86
4. Step 4: Simplify right side
   350,870.18x = 91,864,872,074.43
5. Step 5: Solve for x
   x = 91,864,872,074.43/350,870.18
6. Step 6: Final answer
   x = 261,820.12