Finding the Fourth Proportional to 48,101.89, 71,800.59 and 42,420.59

Step by Step Solution

1. Step 1: Write the proportion equation
   48,101.89 : 71,800.59 = 42,420.59 : x
2. Step 2: Convert to fraction form
   48,101.89/71,800.59 = 42,420.59/x
3. Step 3: Cross multiply
   48,101.89x = 71,800.59 × 42,420.59
4. Step 4: Simplify right side
   48,101.89x = 3,045,823,390.15
5. Step 5: Solve for x
   x = 3,045,823,390.15/48,101.89
6. Step 6: Final answer
   x = 63,320.24