Finding the Fourth Proportional to 141,393.42, 212,079.15 and 82,191.30

Step by Step Solution

1. Step 1: Write the proportion equation
   141,393.42 : 212,079.15 = 82,191.30 : x
2. Step 2: Convert to fraction form
   141,393.42/212,079.15 = 82,191.30/x
3. Step 3: Cross multiply
   141,393.42x = 212,079.15 × 82,191.30
4. Step 4: Simplify right side
   141,393.42x = 17,431,061,041.40
5. Step 5: Solve for x
   x = 17,431,061,041.40/141,393.42
6. Step 6: Final answer
   x = 123,280.57