Finding the Fourth Proportional to 462,100.98, 693,217.59 and 142,279.91

Step by Step Solution

1. Step 1: Write the proportion equation
   462,100.98 : 693,217.59 = 142,279.91 : x
2. Step 2: Convert to fraction form
   462,100.98/693,217.59 = 142,279.91/x
3. Step 3: Cross multiply
   462,100.98x = 693,217.59 × 142,279.91
4. Step 4: Simplify right side
   462,100.98x = 98,630,936,315.62
5. Step 5: Solve for x
   x = 98,630,936,315.62/462,100.98
6. Step 6: Final answer
   x = 213,440.22