Finding the Fourth Proportional to 462,012.72, 693,043.56 and 129,614.64

Step by Step Solution

1. Step 1: Write the proportion equation
   462,012.72 : 693,043.56 = 129,614.64 : x
2. Step 2: Convert to fraction form
   462,012.72/693,043.56 = 129,614.64/x
3. Step 3: Cross multiply
   462,012.72x = 693,043.56 × 129,614.64
4. Step 4: Simplify right side
   462,012.72x = 89,828,591,533.72
5. Step 5: Solve for x
   x = 89,828,591,533.72/462,012.72
6. Step 6: Final answer
   x = 194,428.83