Finding the Fourth Proportional to 141,574.42, 212,112.52 and 133,146.10

Step by Step Solution

1. Step 1: Write the proportion equation
   141,574.42 : 212,112.52 = 133,146.10 : x
2. Step 2: Convert to fraction form
   141,574.42/212,112.52 = 133,146.10/x
3. Step 3: Cross multiply
   141,574.42x = 212,112.52 × 133,146.10
4. Step 4: Simplify right side
   141,574.42x = 28,241,954,799.17
5. Step 5: Solve for x
   x = 28,241,954,799.17/141,574.42
6. Step 6: Final answer
   x = 199,484.87