Finding the Fourth Proportional to 372,678.72, 514,300.32 and 213,672

Step by Step Solution

1. Step 1: Write the proportion equation
   372,678.72 : 514,300.32 = 213,672 : x
2. Step 2: Convert to fraction form
   372,678.72/514,300.32 = 213,672/x
3. Step 3: Cross multiply
   372,678.72x = 514,300.32 × 213,672
4. Step 4: Simplify right side
   372,678.72x = 109,891,577,975.04
5. Step 5: Solve for x
   x = 109,891,577,975.04/372,678.72
6. Step 6: Final answer
   x = 294,869.47