Finding the Fourth Proportional to 57,039.52, 78,712.56 and 31,888.96

Step by Step Solution

1. Step 1: Write the proportion equation
   57,039.52 : 78,712.56 = 31,888.96 : x
2. Step 2: Convert to fraction form
   57,039.52/78,712.56 = 31,888.96/x
3. Step 3: Cross multiply
   57,039.52x = 78,712.56 × 31,888.96
4. Step 4: Simplify right side
   57,039.52x = 2,510,061,677.34
5. Step 5: Solve for x
   x = 2,510,061,677.34/57,039.52
6. Step 6: Final answer
   x = 44,005.66