Finding the Fourth Proportional to 53,856, 74,327.04 and 31,518.72

Step by Step Solution

1. Step 1: Write the proportion equation
   53,856 : 74,327.04 = 31,518.72 : x
2. Step 2: Convert to fraction form
   53,856/74,327.04 = 31,518.72/x
3. Step 3: Cross multiply
   53,856x = 74,327.04 × 31,518.72
4. Step 4: Simplify right side
   53,856x = 2,342,693,162.19
5. Step 5: Solve for x
   x = 2,342,693,162.19/53,856
6. Step 6: Final answer
   x = 43,499.20