Finding the Fourth Proportional to 342,287.57, 472,354.72 and 189,323.02

Step by Step Solution

1. Step 1: Write the proportion equation
   342,287.57 : 472,354.72 = 189,323.02 : x
2. Step 2: Convert to fraction form
   342,287.57/472,354.72 = 189,323.02/x
3. Step 3: Cross multiply
   342,287.57x = 472,354.72 × 189,323.02
4. Step 4: Simplify right side
   342,287.57x = 89,427,619,739.88
5. Step 5: Solve for x
   x = 89,427,619,739.88/342,287.57
6. Step 6: Final answer
   x = 261,264.59