Finding the Fourth Proportional to 142,100.50, 196,106.78 and 84,724.55

Step by Step Solution

1. Step 1: Write the proportion equation
   142,100.50 : 196,106.78 = 84,724.55 : x
2. Step 2: Convert to fraction form
   142,100.50/196,106.78 = 84,724.55/x
3. Step 3: Cross multiply
   142,100.50x = 196,106.78 × 84,724.55
4. Step 4: Simplify right side
   142,100.50x = 16,615,058,263.83
5. Step 5: Solve for x
   x = 16,615,058,263.83/142,100.50
6. Step 6: Final answer
   x = 116,924.70