Finding the Fourth Proportional to 142,649.30, 214,009.49 and 42,811.34

Step by Step Solution

1. Step 1: Write the proportion equation
   142,649.30 : 214,009.49 = 42,811.34 : x
2. Step 2: Convert to fraction form
   142,649.30/214,009.49 = 42,811.34/x
3. Step 3: Cross multiply
   142,649.30x = 214,009.49 × 42,811.34
4. Step 4: Simplify right side
   142,649.30x = 9,162,032,076.60
5. Step 5: Solve for x
   x = 9,162,032,076.60/142,649.30
6. Step 6: Final answer
   x = 64,227.67