Finding the Fourth Proportional to 38,478.89, 53,051.49 and 31,554.51

Step by Step Solution

1. Step 1: Write the proportion equation
   38,478.89 : 53,051.49 = 31,554.51 : x
2. Step 2: Convert to fraction form
   38,478.89/53,051.49 = 31,554.51/x
3. Step 3: Cross multiply
   38,478.89x = 53,051.49 × 31,554.51
4. Step 4: Simplify right side
   38,478.89x = 1,674,013,771.72
5. Step 5: Solve for x
   x = 1,674,013,771.72/38,478.89
6. Step 6: Final answer
   x = 43,504.74