Finding the Fourth Proportional to 462,165.36, 693,818.93 and 219,238.72

Step by Step Solution

1. Step 1: Write the proportion equation
   462,165.36 : 693,818.93 = 219,238.72 : x
2. Step 2: Convert to fraction form
   462,165.36/693,818.93 = 219,238.72/x
3. Step 3: Cross multiply
   462,165.36x = 693,818.93 × 219,238.72
4. Step 4: Simplify right side
   462,165.36x = 152,111,972,938.52
5. Step 5: Solve for x
   x = 152,111,972,938.52/462,165.36
6. Step 6: Final answer
   x = 329,128.89