Finding the Fourth Proportional to 142,003.30, 212,824.05 and 75,475.30

Step by Step Solution

1. Step 1: Write the proportion equation
   142,003.30 : 212,824.05 = 75,475.30 : x
2. Step 2: Convert to fraction form
   142,003.30/212,824.05 = 75,475.30/x
3. Step 3: Cross multiply
   142,003.30x = 212,824.05 × 75,475.30
4. Step 4: Simplify right side
   142,003.30x = 16,062,959,020.97
5. Step 5: Solve for x
   x = 16,062,959,020.97/142,003.30
6. Step 6: Final answer
   x = 113,116.80