Finding the Fourth Proportional to 562,994.28, 844,496.89 and 142,270.16

Step by Step Solution

1. Step 1: Write the proportion equation
   562,994.28 : 844,496.89 = 142,270.16 : x
2. Step 2: Convert to fraction form
   562,994.28/844,496.89 = 142,270.16/x
3. Step 3: Cross multiply
   562,994.28x = 844,496.89 × 142,270.16
4. Step 4: Simplify right side
   562,994.28x = 120,146,703,081.64
5. Step 5: Solve for x
   x = 120,146,703,081.64/562,994.28
6. Step 6: Final answer
   x = 213,406.61