Finding the Fourth Proportional to 142,612.42, 196,828.05 and 108,566.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,612.42 : 196,828.05 = 108,566.50 : x
2. Step 2: Convert to fraction form
   142,612.42/196,828.05 = 108,566.50/x
3. Step 3: Cross multiply
   142,612.42x = 196,828.05 × 108,566.50
4. Step 4: Simplify right side
   142,612.42x = 21,368,932,490.33
5. Step 5: Solve for x
   x = 21,368,932,490.33/142,612.42
6. Step 6: Final answer
   x = 149,839.21