Finding the Fourth Proportional to 67,456.59, 101,175.36 and 42,420.30

Step by Step Solution

1. Step 1: Write the proportion equation
   67,456.59 : 101,175.36 = 42,420.30 : x
2. Step 2: Convert to fraction form
   67,456.59/101,175.36 = 42,420.30/x
3. Step 3: Cross multiply
   67,456.59x = 101,175.36 × 42,420.30
4. Step 4: Simplify right side
   67,456.59x = 4,291,889,123.81
5. Step 5: Solve for x
   x = 4,291,889,123.81/67,456.59
6. Step 6: Final answer
   x = 63,624.46