Finding the Fourth Proportional to 462,321.05, 693,557.48 and 142,472.98

Step by Step Solution

1. Step 1: Write the proportion equation
   462,321.05 : 693,557.48 = 142,472.98 : x
2. Step 2: Convert to fraction form
   462,321.05/693,557.48 = 142,472.98/x
3. Step 3: Cross multiply
   462,321.05x = 693,557.48 × 142,472.98
4. Step 4: Simplify right side
   462,321.05x = 98,813,200,976.89
5. Step 5: Solve for x
   x = 98,813,200,976.89/462,321.05
6. Step 6: Final answer
   x = 213,732.86