Finding the Fourth Proportional to 342,298.31, 472,353.73 and 189,334.06

Step by Step Solution

1. Step 1: Write the proportion equation
   342,298.31 : 472,353.73 = 189,334.06 : x
2. Step 2: Convert to fraction form
   342,298.31/472,353.73 = 189,334.06/x
3. Step 3: Cross multiply
   342,298.31x = 472,353.73 × 189,334.06
4. Step 4: Simplify right side
   342,298.31x = 89,432,647,802.82
5. Step 5: Solve for x
   x = 89,432,647,802.82/342,298.31
6. Step 6: Final answer
   x = 261,271.08