Finding the Fourth Proportional to 342,870.42, 514,387.71 and 143,079.66

Step by Step Solution

1. Step 1: Write the proportion equation
   342,870.42 : 514,387.71 = 143,079.66 : x
2. Step 2: Convert to fraction form
   342,870.42/514,387.71 = 143,079.66/x
3. Step 3: Cross multiply
   342,870.42x = 514,387.71 × 143,079.66
4. Step 4: Simplify right side
   342,870.42x = 73,598,418,654.98
5. Step 5: Solve for x
   x = 73,598,418,654.98/342,870.42
6. Step 6: Final answer
   x = 214,653.74