Finding the Fourth Proportional to 48,200.37, 72,298.43 and 13,140.03

Step by Step Solution

1. Step 1: Write the proportion equation
   48,200.37 : 72,298.43 = 13,140.03 : x
2. Step 2: Convert to fraction form
   48,200.37/72,298.43 = 13,140.03/x
3. Step 3: Cross multiply
   48,200.37x = 72,298.43 × 13,140.03
4. Step 4: Simplify right side
   48,200.37x = 950,003,473.45
5. Step 5: Solve for x
   x = 950,003,473.45/48,200.37
6. Step 6: Final answer
   x = 19,709.46