Finding the Fourth Proportional to 72,054.78, 99,437.28 and 45,198.42

Step by Step Solution

1. Step 1: Write the proportion equation
   72,054.78 : 99,437.28 = 45,198.42 : x
2. Step 2: Convert to fraction form
   72,054.78/99,437.28 = 45,198.42/x
3. Step 3: Cross multiply
   72,054.78x = 99,437.28 × 45,198.42
4. Step 4: Simplify right side
   72,054.78x = 4,494,407,945.10
5. Step 5: Solve for x
   x = 4,494,407,945.10/72,054.78
6. Step 6: Final answer
   x = 62,374.88