Finding the Fourth Proportional to 42,171.20, 63,268.32 and 30,302.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,171.20 : 63,268.32 = 30,302.72 : x
2. Step 2: Convert to fraction form
   42,171.20/63,268.32 = 30,302.72/x
3. Step 3: Cross multiply
   42,171.20x = 63,268.32 × 30,302.72
4. Step 4: Simplify right side
   42,171.20x = 1,917,202,185.83
5. Step 5: Solve for x
   x = 1,917,202,185.83/42,171.20
6. Step 6: Final answer
   x = 45,462.36