Finding the Fourth Proportional to 142,038.09, 213,086.30 and 42,189.39

Step by Step Solution

1. Step 1: Write the proportion equation
   142,038.09 : 213,086.30 = 42,189.39 : x
2. Step 2: Convert to fraction form
   142,038.09/213,086.30 = 42,189.39/x
3. Step 3: Cross multiply
   142,038.09x = 213,086.30 × 42,189.39
4. Step 4: Simplify right side
   142,038.09x = 8,989,980,803.41
5. Step 5: Solve for x
   x = 8,989,980,803.41/142,038.09
6. Step 6: Final answer
   x = 63,292.75