Finding the Fourth Proportional to 342,433.85, 472,549.61 and 189,468.05

Step by Step Solution

1. Step 1: Write the proportion equation
   342,433.85 : 472,549.61 = 189,468.05 : x
2. Step 2: Convert to fraction form
   342,433.85/472,549.61 = 189,468.05/x
3. Step 3: Cross multiply
   342,433.85x = 472,549.61 × 189,468.05
4. Step 4: Simplify right side
   342,433.85x = 89,533,051,245.88
5. Step 5: Solve for x
   x = 89,533,051,245.88/342,433.85
6. Step 6: Final answer
   x = 261,460.87