Finding the Fourth Proportional to 342,196.86, 512,950.86 and 142,627.74

Step by Step Solution

1. Step 1: Write the proportion equation
   342,196.86 : 512,950.86 = 142,627.74 : x
2. Step 2: Convert to fraction form
   342,196.86/512,950.86 = 142,627.74/x
3. Step 3: Cross multiply
   342,196.86x = 512,950.86 × 142,627.74
4. Step 4: Simplify right side
   342,196.86x = 73,161,021,892.86
5. Step 5: Solve for x
   x = 73,161,021,892.86/342,196.86
6. Step 6: Final answer
   x = 213,798.05