Finding the Fourth Proportional to 141,573.42, 212,111.02 and 133,145.10

Step by Step Solution

1. Step 1: Write the proportion equation
   141,573.42 : 212,111.02 = 133,145.10 : x
2. Step 2: Convert to fraction form
   141,573.42/212,111.02 = 133,145.10/x
3. Step 3: Cross multiply
   141,573.42x = 212,111.02 × 133,145.10
4. Step 4: Simplify right side
   141,573.42x = 28,241,543,499.28
5. Step 5: Solve for x
   x = 28,241,543,499.28/141,573.42
6. Step 6: Final answer
   x = 199,483.37